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d02506206c9145c397c7b14c17334895 | three identical metallic plates a,b and c are initially given charges q,4q,2q respectively. if the plates a and c are connected by a conducting wire and plate b is earthed ,then how much charge flows from earth to plate b. | askiitians.com | 2021.25 | [
{
"text": "a and c are connected, so charges on each will become (q+2q)/2= 1.5q b will be eartherd so -4q charge will flow from earth to b and b will become chargeless thanx",
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{
"text": "-4q charge will flow from earth to sphere b thanx",
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] |
|
177a631abf7cde1fa5954fca9c17a69b | if the two angles of a quadrilateral are supplementary and the third angle is 30degrees ,then find the fourth angle | askiitians.com | 2021.39 | [
{
"text": "dear bharat if two angles(a and b) are supplementary then a + b = 180 now a + b + c + d = 360 d+ 180 + 30 = 360 hence d = 360 – 210 = 150 hope it helps",
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|
9bc22e73a34dedebd265607cefd5107e | sir, i m unable to see ur online demo class please suggest me how would i able to do so. | askiitians.com | 2021.39 | [
{
"text": "hello , yuo may use this link to register for demo sessions. demo link: http://www.askiitians.com/free-lessons-for-iit-jee.aspx?scheduledid=366&sessionrequest=xyzinfo46767jdh thanks vips - askiitians",
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1a9241d5ab95078c37dd403bc96e31cf | what max. initial velocity a rocket must have to reach the target of 100 km away in the same horizontal plane.. aaaaa. 100 m/s at 45 degree above horizontal surface.. b. 100 m/s.. ans is a not b... i wanna compelete solutin and reason both are 100 in option so why only ans a is correct.. | askiitians.com | 2021.43 | [
{
"text": "the minimum speed required is 100000m/s or 277777.8kmph and that too at an angle of 45° from the horizontal.",
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},
{
"text": "the minimum speed required is 100000m/s or 277777.8kmph and that too at an angle of 45° from the horizontal.i hope this ans helps",
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a23483409f9072e442cdb82be1c83a95 | i have scored 130 marks in iit jee 2010. will i be selected for eml? | askiitians.com | 2021.25 | [
{
"text": "you’ll definitely have the chances to get selected",
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be8453faa1a076430d6ef7e2d0074408 | whatis the reason for the formation of inverted image formed by the lens? | askiitians.com | 2021.21 | [
{
"text": "dear nikhitha image formation by thin lenses there are two alternative methods of locating the image formed by a thin lens. just as for spherical mirrors, the first method is graphical , and the second analytical . the graphical method of locating the image formed by a thin lens involves drawing light-rays emanating from key points on the object, and finding where these rays are brought to a focus by the lens. this task can be accomplished using a small number of simple rules. consider a converging lens. it is helpful to define two focal points for such a lens. the first, the so-called image focus , denoted , is defined as the point behind the lens to which all incident light-rays parallel to the optic axis converge after passing through the lens. this is the same as the focal point defined previously. the second, the so-called object focus , denoted , is defined as the position in front of the lens for which rays emitted from a point source of light placed at that position would be refracted parallel to the optic axis after passing through the lens. it is easily demonstrated that the object focus is as far in front of the optic centre of the lens as the image focus is behind . the distance from the optic centre to either focus is, of course, equal to the focal length of the lens. the image produced by a converging lens can be located using just three simple rules: an incident ray which is parallel to the optic axis is refracted through the image focus of the lens. an incident ray which passes through the object focus of the lens is refracted parallel to the optic axis. an incident ray which passes through the optic centre of the lens is not refracted at all. the last rule is only an approximation. it turns out that although a light-ray which passes through the optic centre of the lens does not change direction, it is displaced slightly to one side. however, this displacement is negligible for a thin lens. figure 80 illustrates how the image of an object placed in front of a converging lens is located using the above rules. in fact, the three rays, 1-3, emanating from the tip of the object, are constructed using rules 1-3, respectively. note that the image is real (since light-rays actually cross), inverted, and diminished. figure 80: image formation by a converging lens. cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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835d8eb0ef097846c97783e6b7e53400 | notes on computer – windows 7 operating system | askiitians.com | 2021.31 | [
{
"text": "windows 7 (codenamed vienna , formerly blackcomb [ 8 ] ) is a personal computer operating system developed by microsoft . it is a part of windows nt family of operating systems. windows 7 was released to manufacturing on 22 july 2009, [ 9 ] and became generally available on 22 october 2009, [ 10 ] less than three years after the release of its predecessor, windows vista . windows 7's server counterpart, windows server 2008 r2 , was released at the same time.",
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},
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"text": "windows 7 is an leading operating system. windows 7 is an entirely different operating system from vista, providing greater functionality in communication, multimedia, and security, including improved, streamlined user account control (uac) performance with fewer prompts. the interface introduced uses 3d graphics and other high-end visual effects.",
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},
{
"text": "windows 7 operaring system is friendly user to all people who educated or didn’t educated comparing to linx operating system like fedora,ubantu etc.,",
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}
] |
|
6ad880b9f48b059cc08f617700914791 | dear all, is it true that cutoff marks might decrease below 35 percent as the jee 2012 was much tougher from previous years. | askiitians.com | 2021.39 | [
{
"text": "no..i dont think so..the cut off myt be in the range of 165-170..almost 42-43%..yes true the paper was comparitively difficult to the previous years..but the cut iff cannot go below the prescribed 35%..let us hope for the best !! :)",
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{
"text": "no buddy it will not decrease to 40% too the marks will be almost 190",
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47e2edec2ad03f2497363eee243a8605 | if a^x + b^y = 2009..................a and b are prime nos...............find x+y | askiitians.com | 2021.43 | [
{
"text": "2009=287*7 thus x=1&y=1.x+y=2.",
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6c3527c989f0f4e513311be10eebab2e | please explain me general rule/formula of the procedure for determine the cut-mark for i.i.t-j.e.e,aie.e.e-2011 | askiitians.com | 2021.31 | [
{
"text": "dear student cut off marks is calculated based on the average of the marks obtained by students. then they vary it in accordance with the number of seats. generally cut off marks are less in maths as average in maths is low. if you score good in a subject for which average marks are low then you will get good rank on same total marks. all the best. akash goyal askiitiansexpert-iit delhi please feel free to post as many doubts on our discussion forum as you can. we are all iitians and here to help you in your iit jee preparation. win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar respectively : click here to download the toolbar..",
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2a4e9c1d53e96f23ebcbf7752a8cafe0 | cos square 24 degree – cos square 6 degree = a)(root5-1)/2 b)(root5+1)/2 c)(root5-1)/8 d)-(root5-1)/8 | askiitians.com | 2021.25 | [
{
"text": "dear student cos 2 24 = 1 –sin 2 24......(1) cos 2 6 = 1 –sin 2 6........(2) subtracting equation 2 from 1 letcos square 24 degree – cos square 6 degree =x x= – sin 2 24 + sin 2 6 so answer will be (1/8) ( 1 – √5) thanks",
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fb0714b26220fb3dcc1b7c6b75872dc6 | what are noble gas? name its properties. and why they are called noble gas | askiitians.com | 2021.25 | [
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"text": "dear student please find the link below https://www.askiitians.com/iit-jee-s-and-p-block-elements/group-18-elements/ regards",
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8f5771f0e38b5e0faccb75ef926f3f65 | sir , i have got a rank of 394 in gen.category should i prefer b-tech electrical kanpur or dual degree electrical in bombay or madras | askiitians.com | 2021.43 | [
{
"text": "hii congratulation for your achievement . only do dual degree in the course where you are intersted. after b.tech if you want you can switch in between the branches if your interest varied. after doing b.tech from iit you must go to some other reputed college to understand their way of working thus helping yourself in making best possible benefit.",
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feba48007e8037ca1c54622c844e370a | is the steady electric current the only source of magnetic field ?justify | askiitians.com | 2021.43 | [
{
"text": "dear student no, there can be other sources of magnetic field like1) a moving charged particle 2) a permanent magnet 3) changing electric field 4) a conductor carrying current etc..",
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d5027246f4314c7e0c6b5fc91a703023 | is there any chances of getting any branch in any iit with rank 7640 gen category? thanks | askiitians.com | 2021.25 | [
{
"text": "http://www.askiitians.com/iit-jee/advanced/opening-closing-rank.html",
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2eaba8beda277fb3ed07ba2a5e407b6a | if n is the number of triangles of different shapes whose angles are all integers (in degrees),what is n/100 ? | askiitians.com | 2021.31 | [
{
"text": "it is based on permutation combination concepts. let a, b, c are angles of triangles. we know, sum of all angles of triangle equal 180°. so, a° + b° + c° = 180° we know, according to triangle definition, a, b , c ∉ {0°, 180°} so, total number of triangles = ¹⁷⁹c₂ but we have to find number of triangles of different shapes case 1 :- if a = b = c = 60° it is only one possible . case 2 :- if a = b ≠ c , b = c ≠ a, c = a ≠ b if a = 178° then, b = c = 1° if a = 176° then, b = c = 2° .............. ........................ if a = 1° then, b = c = 89° means, number of solution = 89 but a solutions we have to remove when a = 60° then b = c = 60° so, number of solution = 88 similarly , we can get 88 for a = b ≠ c an c = a ≠ b. hence, total number of solution = 88 × 3 then, total number of solutions from here = 3 × 89 - 3 = 3 × 88 = 264 case 3 :- if a ≠ b ≠ c , then number of solutions = (¹⁷⁹c₂ - 264 -1)/3! = 2611 now, total number of triangles of different shapes = 1 + 88 + 2611 = 2700 now, n/100 = 2700/100 = 27",
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c5e715710848985d108987934c63edb6 | my rank is air 17722(haryana state rank 752)in aieee ,if i could get admission in punjab engineering college pec ,chandigarh in electrical branch either in chemical branch in uicet, chandigarh , or inform me abt admission in nit kurukshetra in electrical or civil branch?????????????? | askiitians.com | 2021.31 | [
{
"text": "dear abhishek, the last year cutoff rank for electrical at nit kurukshetra was 8153 and that for civil was 11385. considering this you wont be getting these two branch there. regarding pec the cutoff says that you will be making into cse, electrical, mechanical or civil ther. it would be best if you pursue electriacal or cse at pec. thank you.",
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"text": "dude..u wont be getting into pec...all its best branches gets over within 10k..only u would be getting metallurgy...and in nit kurukshetra also u wont be getting branches of ur choice but u may get anything in uicet,chandigarh acc. to last year's cutoff...",
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20bb101dedaff922f5253eb2fe2e80a3 | you have two copper cables of equal length for carrying current. one of them has a single wire of area of cross- section a and other has a/10 each. judge their suitability for for transprting ac and dca) only single strand for dc and only multiple strand for acb) either for dc and only multiple strands for acc) only single strand for ac either for dcd) only single strand for dc either for ac........ | askiitians.com | 2021.39 | [
{
"text": "the real segment of the a.c. streams on the outside of the wire. so where a thick wire is required, various meager wires are consolidated to give an identical impact of a thick wire. thusly different strands are appropriate for transporting a.c. correspondingly different strands can likewise be utilized for d.c. this is is the correct answer to to the question. in case of alternating current (ac) magnetic field woulx often change and inducec current due to self induction would bring an hindrance. so as we have 10 strands then each would cancel the magnetic flux changing and so induced current is reduced to its maximum. in case of dc no such induction as current is steady. hence magnetic flux also remains steady.",
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aff1b38218f760dbdba8ad357870a4c8 | if x is real, and k=(x^2)-x+1/(x^2)+x+1, then : (a) 1/3<=k=<3 (b) k>=5 (c) k<=0 (d) none of these | askiitians.com | 2021.31 | [
{
"text": "k=x^2-x+1/x^2+x+1 eq 1 cross muitiply then arrange the eq 1 (k-1)x^2+(k+1)x+k-1=0 so x is real then d>=0 d=(k+1)^2-4(k-1)^2>=0 k^2+2k+1-4k^2+8k-4>=0 -3k^2+10k-3>=0 muiltiply by -1 3k^2-10k+3<=0 solve the inequality 1/3<=k<=3 abhishek doyal iit bombay askiitian tutor",
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adf05c31699536d2c4d57206e1e975ec | what is the difference between flora and manual.and what difference between chemosynthetic autotroph and photosynthetic autotroph | askiitians.com | 2021.25 | [
{
"text": "a flora describes plants and where they live. floras typically include a dichotomous key for identification purposes and often times will include range maps as well. floras are almost always designed to be simultaneously regionally constrained and regionally exhaustive/complete (i.e., includes all plants that grow in that region or at least all taxonomic divisions of specified taxa). a manual applies much more broadly to plants, and typically instructs you on a subject (e.g., identification/differentiation of species). a manual does not need to be exhaustive and its scope is typically user defined (though often based on the scale/range of it's underlying subject). however, some have used the term manual to be more or less synonymous with flora or otherwise similar document. please ask only one question in one thread.",
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"text": "photosynthetic autotrophs synthesize organic compounds. chemosynthetic autotrophic bacteria make use of chemical to prepare their food. these bacteria obtain energy from inorganic compounds. plants get energy from the sun through a process called photosynthesis; this process supports nearly all life on earth.",
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f502dcd2cd872d347abaa4d67a94a70a | which is the best college in india???????? | askiitians.com | 2021.39 | [
{
"text": "dear student, iit mumbai is the best.... best of luck..!!!! we are all iitians and here to help you in your iit jee preparation. win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar : click here to download the toolbar.. askiitians expert sagar singh - iit delhi",
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ac6a82ad59f2f4796b31fedaeb8844b4 | i got state rank(delhi region) 13404..plz suggest me gd reputated clgs in delhi or delhi ncr..plz plz.. | askiitians.com | 2021.39 | [
{
"text": "dear ravi prakash , please give your all india overall rank for predicting colleges available for you !! reply immendiately !",
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},
{
"text": "u wont get good college . i think u shud take a drop and do better next year",
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b5b47e821d5cedc76392941617808511 | i have score 112 marks in jee main and 92.6% in class 12 what will be my rank will i got seat in nit jalandhar i belong to general category and when rank will be published give me exact time | askiitians.com | 2021.43 | [
{
"text": "wait for the rank to be declared. it is likely to be decalared by today.",
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36e9761254447012cc1da7c21b0929a3 | extraction of elements | askiitians.com | 2021.31 | [
{
"text": "extraction of elements :- we have learnt that most of the elements do not occur in the free state in nature but these occur in the combined states. in the combined states, metals are usually found in the oxidized form, while non-metals occur in the reduced form such as halide ions. therefore, the methods of extraction of metals and non metals from the natural sources are quite different. the metals can be obtained from their oxidized forms by reduction and non metals can be obtained by oxidation. in general, oxidation or carried out by deelectronation i.e. removing electron directly or indirectly. on the other hand, reduction is carried out by electronation i.e. by providing electron directly or indirectly.",
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5a2f6ca233b5e7767bcc5e24cdb049b8 | how to study inrganic chemistry | askiitians.com | 2021.25 | [
{
"text": "for studying inorganic chemistry first of all one must study periodic table very well including periodic properties ,how these properties changes along a period and down the group..during learning of various blocks and groups the most important thing is properties( physical and chemical) .in almost all exams mostly questions related to coordination compounds,d&f block elements and name of salts and ores (metallurgy) are often asked.. thanks®ards kamlesh kumar askiitians faculty",
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9a440c5422001deb7d0bd369a3235591 | what is solar energy | askiitians.com | 2021.39 | [
{
"text": "solar energy: the sun is the main source of energy for all living beings on this earth. even the energy in the fossil fuels has come from the sun. the sun has an endless reservoir of energy which would be available as long as the solar system is in existence. technologies for harnessing the solar energy have been developed in recent times. solar cooker: solar cooker is very simple in design and mode of function. it is usually made from mirrors. plain mirrors are placed inside a rectangular box. the light reflected from the plain mirrors concentrates the solar energy inside the solar cooker which generates enough heat to cook food. solar furnace: solar furnace is made like a concave mirror. large solar furnace has many smaller mirrors to compose a very large convex mirror. the thing to be heated is place near the focus of the mirror. solar cells: solar cells are made from silicon. the solar panel converts solar energy into electrical energy which is stored in a battery; for later use.",
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f10231967a9a71f28d07cc14558ccbdc | a man standing between 2 cliffs hears the first echo of a sound after 2 seconds and second echo 2 seconds after the initial sound. if the speed of sound be 330m/s, calculate the distance between the two cliffs. options: a) 1650m. b) 990m. c) 825m. d) 660m | askiitians.com | 2021.43 | [
{
"text": "t1=2s ,t2=4s , v=330m/s d=? step1:find distance b/w a man and cliff one d1=vt1/2=330x2/2=330m step2:find distance b/w a man and cliff two d2=vt2/2=330x4/2=660m step3:find distance b/w cliffs d=d1+d2=330m + 660m= 990m therefore,the distance b/w cliffs is 990m.",
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0241c2cc91c214ce87434d1a5f4e80d5 | prove that (1+tana+cota)•(sina-cosb)=sina•tanb-cota•cosb | askiitians.com | 2021.31 | [
{
"text": "dear student equation must be valid for all angles, since this is not true at a = 45 and b = 60 we need some defining criteria for values of a and b regards",
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"text": "dear student question is not clear please attach an image, we will happy to help you good luck cheers",
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75297ffe4a229483265e11f6f1926d10 | is aiims mbbs graduates are recruited by medcine or health care industry ? | askiitians.com | 2021.39 | [
{
"text": "hello student mbbs students can enter in both of the industry. student can enroll him self in post graduate courses in these industry after mbbs.",
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2b4471c5c6a33238e9fd66417cff962a | i am studying in a foreign country. how do i get admission after qualifying in jee (advanced)-2014 on the basis of the diploma/certificate that i would obtain from my board? | askiitians.com | 2021.43 | [
{
"text": "you have to provide a certificate from the association of indian universities ( aiu ), when you submit your completed application form, stating that the diploma/certificate you will receive is equivalent to the 10+2 system of indian boards.",
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d0921770426e237e7869af1274cd22b9 | please reply | askiitians.com | 2021.31 | [
{
"text": "only central financed ,self financed university do u approve my answer?/",
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04e48e16c6ae26b158779eee92115fe2 | what are the average packages offered in maharajha agrasen institute of technology in btech. | askiitians.com | 2021.21 | [
{
"text": "dear pankaf, maharaja agrasen is among the best colleges under ipu,the faculty , administration and placements of mait are really good. the average package last year was around 3.8 lacs. best of luck cracking iit just got more exciting,it’s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win exciting gifts by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple click here to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
"name": "",
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2d5f7e909ad9575fb07ddc23a6a3518a | the intensity of sound wave gets reduced by 20% on passing through a slab .the reduction in intensity on passing through wo consecutive slabs is | askiitians.com | 2021.43 | [
{
"text": "we know that intensity of sound varies, i 1 = 1.26 i 0 . so, 20% of i 0 will be, (20% of i 0 ) = (20/100) i 0 = i 0 /5 thus the new intensity of sound will be, i 1 ’ = 1.26 (i 0 /5) = (1.26/5) i 0 = 0.252 i 0 therefore from the above observation we conclde that, the new intensity will be0.252 i 0 .",
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f5ce1d268fc90ff2b7f06d438c2bf49e | a particle of mass 2kg revovles in a circular path on x-y plane with a constant speed of 5 m/s along the path x 2 +y 2 -25=0. the force(in n) acting on the particle at the position (-3m,4m) will be\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ | askiitians.com | 2021.39 | [
{
"text": "dear sindhuja radius of the circle is =5 since it is moving with constant speed so there is no tangential acceleration only centripetal acceleraton will act towards the center of circle . centripetal force =mv 2 /r =2*25/5 =10 n tan θ =|4/-3| =4/3 so force =10(cosθ i -sinθj) =6i-8j please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee & aieee preparation. all the best. regards, askiitians experts badiuddin",
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d148700e1fe4468527c60681957a8e87 | sir what is better it in nit surathkal or civil or biotech in nit warangal or it in iiit-allahabad????? pls giv order of preference | askiitians.com | 2021.31 | [
{
"text": "the best option is --> nit- national institute of technology warangal then, nit surathkal. then, iiit-allahabad?",
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{
"text": "there is not much difference between nit warangal and nit surathkal so you can join any of them as oer your convenience then later iiit allahbad...please approve my asnwer",
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1098023aaa2ad72ff73254e021d9838c | hi sir! i got e46763 rank in iit-jee 09 in eml. please help me out from this....... which college i'll get and what does this rank mean???? please...... | askiitians.com | 2021.31 | [
{
"text": "dear mayank, most probably you wont be getting any of the colleges as the total no. of seats is just 2000. thank you.",
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e9183783a4d50bd859fa47fe8f05b2f1 | 11th i didnt do much hard work....... should i complete my 11th portion before going to 12th or should i leave...... i just have 2 months to get into 12th. | askiitians.com | 2021.31 | [
{
"text": "you should do your 11 portion in these 2 months because during 12 you will not have any time to do 11 portion and 11 syllabus is base for higher studies",
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},
{
"text": "yes u should do 11th first as it is also there for iseet",
"name": "",
"is_accepted": false
}
] |
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3064423b37d9bb8b28a7384558fe5526 | if x=2 cos t - cos 2t, y=2 sin t – sin 2t find d2y/dx2 at t=pi/2 | askiitians.com | 2021.31 | [
{
"text": "dx/dt=-2sint+2sin2t dy/dt=2cost-2cos2t dy/dx=(dy/dt)/(dx/dt)=(cost-cos2t)/(-sint+sin2t) dy/dx=2sin3t/2.sint/2/2cos3t/2sint/2 =tan3t/2 d 2 y/dx 2 =d/dx(dy/dx) =d/dt(dy/dx).dt/dx =(3/2).sec 2 3t/2.1/(-2sint+2sin2t) =3/4.1/cos 2 (3t/2).1/(sin2t-sint) =3/4.1/cos 2 (3t/2).1/2cos3t/2.sint/2 =(3/8).1/(cos 3 3t/2.sint/2 put t= pi/2 d 2 y/dx 2 =3/8. 1/(cos 3 (3pi/4).sin(pi/4)) =-3/2 thanks & regards rinkoo gupta askiitians faculty",
"name": "",
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},
{
"text": "dx/dt=-2sint+2sin2t dy/dt=2cost-2cos2t dy/dx=(dy/dt)/(dx/dt)=(cost-cos2t)/(-sint+sin2t) dy/dx=2sin3t/2.sint/2/2cos3t/2sint/2 =tan3t/2 d 2 y/dx 2 =d/dx(dy/dx) =d/dt(dy/dx).dt/dx =(3/2).sec 2 3t/2.1/(-2sint+2sin2t) =3/4.1/cos 2 (3t/2).1/(sin2t-sint) =3/4.1/cos 2 (3t/2).1/2cos3t/2.sint/2 =(3/8).1/(cos 3 3t/2.sint/2 put t= pi/2 d 2 y/dx 2 =3/8. 1/(cos 3 (3pi/4).sin(pi/4)) =-3/2 thanks & regards",
"name": "",
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}
] |
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170d5126842bfaf105d155501d02626d | sir i got 213 in jee mains and looking at the cut off i think these marks are really very good. i am also expecting no less than 90% in my case boards. so i just wanted to ask according to you should i pay fees for the counselling for any other private institution or my marks are enough to guarantee me a good nit or nsit. i belong to genral category and my home state is harayana. | askiitians.com | 2021.21 | [
{
"text": "you can get a decent nit, you must reserve an option as nit or nsit and try hard for jee adv.. good luck....................",
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"is_accepted": false
},
{
"text": "thanku sirsir",
"name": "",
"is_accepted": false
},
{
"text": "i just wanted to ask wether i should pay fee for the vit counselling and attend it or shall i leave it totally? plz reply soon",
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}
] |
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d8a2f32970e26ff98dd40745c3ed4035 | the pattern of the magnetic field produced by the straight current carrying conducting wire is (a) in the direction opposite to the current (b) in the direction parallel to the wire (c) circular around the wire (d) in the same direction of current | askiitians.com | 2021.31 | [
{
"text": "answer: a explanation: (c) magnetic field line around a current carrying straight conductor is represented by concentric circles.",
"name": "",
"is_accepted": false
}
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b57f2c812a712a2001d954be9dc60859 | . 2 ml each of concentrated hcl, hno3 and a mixture of concentrated hcl and concentrated hno3 in the ratio of 3 : 1 were taken in test tubes labelled as a, b and c. a small piece of metal was put in each test tube. no change occurred in test tubes a and b but the metal got dissolved in test tube c respectively. the metal could be [ncert exemplar problems] (a) al (b) au (c) cu (d) ag | askiitians.com | 2021.31 | [
{
"text": "answer: b",
"name": "",
"is_accepted": false
}
] |
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ea50551396d29b71d5103fd74c101e52 | i have secured 3419, what is the scope for m tech biochemical engineering and biotechnology at iit delhi | askiitians.com | 2021.39 | [
{
"text": "dear student, pls check opening and closing rank of college and branch that you want to take admission in on their official website",
"name": "",
"is_accepted": false
}
] |
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7e8e3db649e23d6587ba0f01704c2f83 | in 2-3 months , ill be in class xi. i have already studied many topics of jee in 9th and 10th thoroughly.but now i want to start the real preparation - to get air-1 . i already have the required books and im going to fiitjee since 9th.how many hours to study? how to stay motivated mentally? | askiitians.com | 2021.39 | [
{
"text": "be consistent...and stay ahead of everyone since u have studies some topics....and if possible complete ur 11th early....regards...",
"name": "",
"is_accepted": false
}
] |
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22344c0ab7f4f0d36169a841cba58b88 | a rod of length l carries a charge q uniformly distributed over it. find the electric field intensity at a point charge a on the perpendicular bisector of the rod. | askiitians.com | 2021.21 | [
{
"text": "correction answer is e = 4ql*sin(l/2)/al but i don’t know how to send photo here. you can get using integration e = where de = k*(q/l)*dx/(a 2 + x 2 ) cos = a/(a 2 + x 2 ) 1/2",
"name": "",
"is_accepted": false
}
] |
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b2df8844ef3e621189cad9431e7b1274 | sir can i score above 600 in neet in 10 days preparation | askiitians.com | 2021.39 | [
{
"text": "hello neet is one of the toughest exams of india. and you think about to clear the neet exam in just 10 days. it is only possible when you have good command in basic concept and have completed your 11 th , 12 th syllabus already. if you should prepare well and focus only on neet exam then there is a chance to clear the exam. you should solve previous papers in last 10 days and give mock papers. you should also check the neet answer key eduncle and analyze your preparation. it will help you to score well in the exam. thank you!!",
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}
] |
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6e6815c0b4e8a2f767dc8c45ecaebb6b | what are the applications of newtons rings | askiitians.com | 2021.39 | [
{
"text": "here are some application of newton rings we used to have an experiment where a clean convex lens lay on a flat piece of glass while being illuminated with light. the contact point and the air gap as the lens curved away from the flat produced an interference pattern that could be observed using a microscope. a vernier scale on the microscope enabled measurements to be made.in practice it can be used in testing the quality of lenses.",
"name": "",
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}
] |
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a06c62d0e6f91cf54273fbf9a8372669 | electrolytic reduction method is used in the extraction of a. highly electropositive elements b. transition metals c. noble metals d. highly electronegative elements | askiitians.com | 2021.31 | [
{
"text": "electrolytic reduction method is used in the extraction of a. highly electropositive elements thanks keep posting your doubts regards sahil",
"name": "",
"is_accepted": false
},
{
"text": "@sahil how are electropositive elements extracted using electrolysis? they should have a negative reduction potential (eg li+, na+, k+), which will favour reduction of h+ over reduction of these electropositive metals. please justify your answer and dont give such one line answers.",
"name": "",
"is_accepted": false
}
] |
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53fde31131a6bc39665344267e1dc372 | if the sum of coeffs in the expansion of (x+y) n is 2048, then the greatest coefficient in the expansion is? a)11c6 b)11c7 c)12c6 d)10c6 plz explain... | askiitians.com | 2021.43 | [
{
"text": "a) 11c6.",
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"is_accepted": false
},
{
"text": "sir, plz explain the proceedure...",
"name": "",
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}
] |
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6298e17d019d156093be4e25362fedbc | if x+y+z=1 then (1-3x^2-3y^2-3z^2+2x^3+2y^3+2z^3)=? | askiitians.com | 2021.43 | [
{
"text": "hello student, thanks & regards arun kumar btech, iit delhi askiitians faculty",
"name": "",
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}
] |
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ae9025828544314f4fa8abeef939186e | sir i am in class 12th presently .......and i have decided to take a drop for iit-jee 2012 ...... i am joining one year classroom coaching program of resonance in mumbai for droppers batch................. now my aim is not only to clear iitjee but to get a rank in top 10 ......... now plese tell me how should i start my syllabus so that i could complete it before jan 2012 so that i will get an ample time to revise my syllabus ...................... plese note that i am taking a drop and i want to get a rank in top 10.................i am ready to very hard work and i had even start doing ..................... so plese tell me how to complete my jee syllabus................. thank u ................. | askiitians.com | 2021.25 | [
{
"text": "dear harender you should join a good coaching for one year. don't think in terms of rank just think that i have to give my best. if you will think in terms of rank then it will always keep a pressure on you and your performance will be affected. all the best. akash goyal askiitiansexpert-iit delhi please feel free to post as many doubts on our discussion forum as you can. we are all iitians and here to help you in your iit jee preparation. win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar respectively : click here to download the toolbar..",
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] |
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c8cb8492bf6738f55df32f2d9f861292 | blood pressure is measured by sphymogmanometer stethoscope electrocardiogram phonocardiogram | askiitians.com | 2021.39 | [
{
"text": "asphygmomanometer orblood pressure meter(also referred to as a sphygmometer) is a device used to measureblood pressure, composed of an inflatablecuffto restrict blood flow, and amercuryor mechanicalmanometerto measure the pressure. it is always used in conjunction with a means to determine at what pressure blood flow is just starting, and at what pressure it is unimpeded. manual sphygmomanometers are used in conjunction with astethoscope. thanks and regards apoorva arora iit roorkee askiitians faculty",
"name": "",
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}
] |
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eddd8702edbf926f641d64743c6e78da | sir,i really love machines and want to study mechanical engineering.does mechanical engineering from iit has scope... | askiitians.com | 2021.43 | [
{
"text": "iit madras is the best for mechanical engineering. it is also ranked no.1 in recently released nirf ranking. the institute is located in chennai which is also known as the detroit of india.",
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}
] |
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c2d8c08fb32ce19c8de9b2351762b775 | assuming that mass m of the largest stone that can be moved by a flowing river depends 'v' velocity,densityof water and g acc. due to gravity.show that m varies with 6th power of velocity of flow.... | askiitians.com | 2021.31 | [
{
"text": "m -> v, d (density) and g let m (proportional to) v a d b g c now hence m = k v a d b g c where k is constant of proportionality [m] = [v] a [d] b [g] c m 1 l 0 t 0 = (l 1 t -1 ) a (m 1 l -3 ) b (l 1 t -2 ) c m 1 l 0 t 0 = m b l a - 3b + c t -a - 2c comparing the powers, b = 1 a - 3b + c = 0 hence, a - 3(1) + c = 0 a + c = 3 ...........1 -a - 2c = 0 ............2 solving equations 1 and 2, a + c = 3 -a - 2c = 0 --------------- -c = 3 hence, c = - 3. substituting c = -3 in equation 1, we get a = 6. thus, m = k v 6 dg hence, it can be said that m varies with 6th power of velocity. hint: in any type of problems of dimensional analysis where it is given that this quantity depends on so and so... solve by this method always. it would be easier.",
"name": "",
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},
{
"text": "m is directly proportional to vˆx m is directly proportional to dˆy m is directly proportional to gˆz m=k*v^x*d^y*g^z m=(l*t^-1)^x*(m*l)^y*(lt^-2)^z y=1 -x-2*z=0 z=-x/2 x-3*y-x/2=0 x=6 m=v^6 -3",
"name": "",
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},
{
"text": "assuming that the new year sales and marketing director and i am not sure if we can help you with a few minutes walk to the right to monitor the wrong date of birth by which an objection was raised against acknowledgement coupon code has been sent to you by wwhic to get a good time to time and money when you are looking for a duplicate pan and cook until you get to know what to say the word out more information please visit to a few minutes to get o and the surrounding areas and i am sure you will need a little while more about information and about in to a new job is posted by to be get back a week few years weeks of and a few weeks and i am sure you will find need a for your the same objection the that's what a good lovely time with your friends list for and book against a me to a few new one and two other people to do it so i that i you have are the not be so i much for more details on to a you are have to been able in my a good idea for your the objection same as day to of my favourite with the a bit good time for me and the rest surrounding areas the objection same as day to of a problem few problem is of the a good bit like more about than i a good bit like the look and let me you were have been to see a few list and the surrounding areas countryside of in converting a good bit like the to be get a back to seat for a few minutes weeks of and a i will am and i have recently written on in your life with a the objection same day as a well as established a reputation few years weeks of and a i will send have been to see a few minutes to get the cheapest most likely popular in and out around and i have recently written in on a line and to get a to the work that is you want a new good for time of and a few weeks and of the a good bit like more about than it a i am will not have registered one registered it for you the opportunity most of my it to was to get have to been to been able in able the of a this week so that we you can are not the only intended thing way that is that i it am can also you have are have been to to been to a get new few years weeks years weeks and and of the a most body most body most popular likely is of is of is",
"name": "",
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},
{
"text": "m is directly proportional to vˆx m is directly proportional to dˆy m is directly proportional to gˆz m=k*v^x*d^y*g^z m=(l*t^-1)^x*(m*l)^y*(lt^-2)^z y=1 -x-2*z=0 z=-x/2 x-3*y-x/2=0 x=6 m=v^6 -3",
"name": "",
"is_accepted": false
},
{
"text": "dear student, please find the attached answer to this question below. let m (proportional to) v a d b g c now hence m = k v a d b g c where k is constant of proportionality [m] = [v] a [d] b [g] c m 1 l 0 t 0 = (l 1 t -1 ) a (m 1 l -3 ) b (l 1 t -2 ) c m 1 l 0 t 0 = m b l a - 3b + c t -a - 2c comparing the powers, b = 1 a - 3b + c = 0 hence, a - 3(1) + c = 0 a + c = 3 ...........1 -a - 2c = 0 ............2 solving equations 1 and 2, a + c = 3 -a - 2c = 0 --------------- -c = 3 hence, c = - 3. substituting c = -3 in equation 1, we get a = 6. thus, m = k v 6 dg hence, it can be said that m varies with 6th power of velocity. hope it helps. thanks and regards, kushagra",
"name": "",
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}
] |
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27252571640d69ab34825d5dff38f7a9 | why does current remain constant along a wire of non uniform cross section? | askiitians.com | 2021.25 | [
{
"text": "dear student, current is non dependent on area of cross section of wire, its the current density which depends inversely on the area of cross section of the wire, hence current remains constant.",
"name": "",
"is_accepted": false
}
] |
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14ab5fc7d86b01fda63b98d60689e315 | how to manage timewhile preparing for iit jee | askiitians.com | 2021.39 | [
{
"text": "i would say 45 mins for each subject. and the remaining time for maths. as it is suppossed to be the most scoring part.",
"name": "",
"is_accepted": false
}
] |
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57342816ea38c5048b6d8b351ecdbb98 | what is the use of choke and starter in a fluoroscent tube??????? | askiitians.com | 2021.39 | [
{
"text": "hi, the function of a starter is mainly to provide the high potential difference required to to start the flow of electrons in the lamp.whereas the choke is manly used to maintain the potential difference between the electrodes to keep the flow of electrons constant so that the lamp works without any interference.",
"name": "",
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}
] |
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cb4790943e35dd2c9bc98b8f5a7126bd | what is the maximum and minimum magnitude of 2i+3j and 5i-2j | askiitians.com | 2021.31 | [
{
"text": "add them to get maximum magnitude. ( 2i+3j) + (5i-2j) = 7i+j hence maximum magnitude = square root of (7 2 + 1 2 ) = square root of (50 ) substract them to get minimum magnitude. ( 2i+3j) – (5i-2j) = – 3i+ 5j hence minimum magnitude = square root of [(-3) 2 + 5 2 ) = square root of (34 )",
"name": "",
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}
] |
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a34927d5a4500a002c3abcc6dbd84d18 | . 1 mole of ideal monoatomic gas at 27°c expands adiabatically against a constant external pressure of 1.5 atm from a volume of 4dm 3 to 16 dm 3 . calculate (i) q (ii) w and (iii) δ u | askiitians.com | 2021.21 | [
{
"text": "dear kundan workdone = 1.5( 16-4) =18 since in adiabatic process no heat transfer take place so dq =0 and dq =du +dw du=-dw =-18 please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best. regards, askiitians experts badiuddin",
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] |
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f1bb2cbc95f0f995c505060f501eb849 | why should the time constant of an rc circuit for demodulation purpose be higher than the time period of the carrier wave? | askiitians.com | 2021.25 | [
{
"text": "modulation is defined as the process by which some characteristics of a carrier signal is varied in accordance with a modulating signal. the base band signal is referred to as the modulating signal and the output of the modulation process is called as the modulation signal. amplitude modulation is defined as the process in which is the amplitude of the carrier waveis varied about a means values linearly with the base band signal. the envelope of the modulating wave has the same shape as the base band signal. after receiving an am signal, it can be demodulated to recover the low frequency signal. one of the simplest types of am demodulating circuits is the envelope detector. in order to accurately recover the low frequency signal the envelope detector must satisfy an important condition; the time constant of the envelope detector network must be much longer than the period of the high frequency signal but much shorter than the period of the low frequency signal. once the signal is demodulated, the high frequency signal iseliminated and what remains is the low frequency component. the general idea of the envelope detection method to regain the low frequency signal. it is composed of a resistor, capacitor, and diode. the time constant set by the values of the resistor and capacitor needs to be much less than the period of the audio signal but much greater than the period of the rf (high frequency) signal. from the observation, we conclude that, the time constant of an rc circuit for demodulation purpose be higher than the time period of the carrier wave.",
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9677ffa03f68f143aeb4b9b6a857bb15 | propene & propyne are distinguished by agno3 in ammonia..........how? | askiitians.com | 2021.21 | [
{
"text": "agno3 in ammonia. alkynes with terminal hydrogens give grey ppt while alkenes or other alkynes give no reaction.",
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"is_accepted": false
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] |
|
159a3412738d544ed206d569baa020e6 | if a parabolic reflector is 20 cm in diameter and 5 cm deep, find the focus. | askiitians.com | 2021.31 | [
{
"text": "hello student, the origin of the coordinate plane is taken at the vertex of the parabolic reflector in such a way that the axis of the reflector is along the positive x -axis the equation of the parabola is of the form y 2 = 4 ax (as it is opening to the right). since the parabola passes through point a (10, 5), 10 2 = 4 a (5) 100 = 20 a therefore, the focus of the parabola is ( a , 0) = (5, 0), which is the mid-point of the diameter. hence, the focus of the reflector is at the mid-point of the diameter. thanks and regards shaik aasif askiitians faculty",
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fc211e6b2dd2891337715417b7fc37c7 | i want to know which is better? dce (1) electrical or nit trichy ece . acc. to placement. | askiitians.com | 2021.25 | [
{
"text": "i would suggest you to go for nit trichy ece i feel that placements are better in nit trichy than in dce",
"name": "",
"is_accepted": false
},
{
"text": "hi, i also did my b.tech from dce, and would suggest u to take electrical in dce. electrical placements are very good in dce and are best if compared with other branches of dce. many public sectrors companies with famous private companies recruited the students at a very good packages in this time of recession also. hope ur query uis answered.",
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] |
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a8189d801413a72c0a2284d7a3ecc111 | how much i need to score (apprx.) to secure a rank under 1000 | askiitians.com | 2021.25 | [
{
"text": "@ ankit iit jee advanced changes the paper poattern every year interms of the total marks , so, you need to secure at least 790 percent mark to get a rank under 1000 , still it depend upon the paper toughness level as well as how others performed in the exams . hope it clears all the best ..",
"name": "",
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{
"text": "consider a nonconducting ring of radius r and mass m which has a charge q distributed uniformly over it. the disc is rotated about its axis with an angular speed w (w=2*22/7).find magnetic moment of the disc",
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}
] |
|
3aabeabef18cbe6d7364c57570e7375a | what is the radius of curvature for a flat surface? | askiitians.com | 2021.31 | [
{
"text": "hi s ramya, radius of curvature for a flat surface is infinity. the larger the radius of curvature, the flatter the surface will appear. have a nice day :)",
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}
] |
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4ac7bec939f040dde310dbe55ee12c21 | a small particle of mass m attached with a light inextensible thread of length l is moving in vertical circle.minimum velocity requried for the particle to go around complete vertical circle is √gl.in the given case particle is moving in a complete vertical circle and ratio of its maximum to minimum velocity is 2:1.find the minimum velocity of particle\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ | askiitians.com | 2021.31 | [
{
"text": "dear sindhuja, ans:- let the max velocity is 2u then the min velocity is u(at the topmost point) then from the law of conservation of energy we get, (2u)²=u²+2g(2l) or 3u²=4gl hence u=2√(gl/3) please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. win exciting gifts by answering the questions on discussion forum. all the best sindhuja !!! regards, askiitians experts soumyajit iit\\_kharagpur",
"name": "",
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] |
|
3f251d16d368f38c42113c9d8f4f0db0 | my air in aieee is 30509.... m a general category student from u.p.....plz suggest best colleges acc. to my rank.... | askiitians.com | 2021.21 | [
{
"text": "i dont think u cud get nits .... still u cud try to get lower nd new nits. if u have filled the form of jaypee, u cud easily get noida cs branch. with this rank this is the most appropriate option available to you. also u cud get some private colleges of uptu through your state rank. also what is ur rank in upsee 2011???",
"name": "",
"is_accepted": false
},
{
"text": "my upsee rank is 4460 overall n 550 in girls category.....",
"name": "",
"is_accepted": false
},
{
"text": "ankita ur upsee rank is good..... u can easily get good govt. colleges with this rank with a branch of ur choice... also if u hv filled the form of jaypee noida then u cud easily get cse at noida sec 63 campus which is very good as far as placements are considered.... also u could apply for some good private colleges(like jss,galgotia,akg) under uptu through ur aieee state rank... check uptu site for more details",
"name": "",
"is_accepted": false
},
{
"text": "sir, can i get iet lucknow with this rank????",
"name": "",
"is_accepted": false
},
{
"text": "can i get any benefit of my aieee rank in getting admission to hbti or iet??????",
"name": "",
"is_accepted": false
},
{
"text": "ankita aieee rank can be used for admission to only private colleges under uptu..... but since ur upsee rank is good u can easily get iet but not sure about hbti.. u can also easily get all branches in mmm,knit,biet.... so attend the counselling .... check the off campus online counselling for 2010 cutoff rank for different colleges.. at www.seeuptu.nic.in please please approve my answer by clicking yes below...",
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|
59ea53e1b483435f7c3803946e2aa597 | what is the %age of reservation for obc in aieee 2010.? is there reservation for obc creamy layer??? | askiitians.com | 2021.43 | [
{
"text": "dear prakyth raj, (1) the % of reservation given to obcs is 27%. but obcs are getting 42% as each institute is increasing 54% seats to maintain quantum of general seats (i.e. 77 out of 100 excluding sc-st seats). obcs will get 27% of this 154 seats means 42 seats in an institute or class where 100 studen's were admitted before obc reservation. (2) there is no any reservatio for creamy layer obcs. however the obc creamy layer criteria are very wide. but the obcs and caste certificate issuing authorities are highly confused. nobody is reading these criteria. there is a separate rule of post held for govt seravnts and of land holding for farmers. salary and agricultural income is never counted to determine creamy layer. s hailendra wagadre, all india principal general secretary apaax (since-98), 09425003700, 07146277477 (res.) [email protected] or [email protected] visit my website www.obcguru.com for obc reservation rules, creamy layer criteria dt 08.09.1993, govt creamy layer clarifications dt 14.10.2004, 4.50 laks order dt 14.10.2008, central caste list, caste certificate & application format,central sector scholarship @ rs. 1000/2000 per month for college students, court’s orders etc.",
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42b2516e9a9ab488e0c03b535d99f09f | how electrode concentration cell work | askiitians.com | 2021.21 | [
{
"text": "electrode concentration cells: two similar electrode at different conc. are dipped in same solution e.g. two hydrogen electrodes at unequal pressure are immersed in same solution of hydrogen ions.in these cells, the potential difference is developed between two like electrodes at different concentrations dipped in the same solution of the electrolyte. for example, two hydrogen electrodes at different has pressure in the same solution of hydrogen ions constitute a cell of this type. (pt,h2(pressure p1))/anode |h+| (h2(pressure p2)pt)/cathode pt; h2(p1) | h+ions solution | h2(p2); pt",
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8bf595c125173a80bb799032a95f6827 | <p>hello sir/ma'am,</p> <p>i have given my aieee-2010.</p> <p>i have 9350 state rank.</p> <p>can i get admission in any niit or iiit all over india.</p> <p>please help me in this regard.</p> <p>thank you</p> <p>shaman</p> | askiitians.com | 2021.43 | [
{
"text": "hii you don’t get admission in niit from aieee .iiits can be a reality with this rank as you never know how the seats are going to behave .the chances are very thin but you must keep ourself in the loop of counseling process .as you never know what turn of events your destiny might take.. best of luck",
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5e52785dfed5d5fa2c8c0f257e4253fc | . in each of the following pairs of numbers, state which whole number is on the left of the other number on the number line. also write them with the appropriate sign (>, (a) 530, 503 enejnejbewbehbrbrbkjvjkdvjdksbvrbvr | askiitians.com | 2021.25 | [
{
"text": "dear student (a) since, 530 > 503 hence, 503 is on the left side of 530 on the number line thanks",
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] |
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c3433b7029548d51c8813b25d64444df | 28. living cells were discovered by : (a) robert hooke (b) purkinje (c) leeuwenhoek (d) robert brown | askiitians.com | 2021.43 | [
{
"text": "ans : (c) leeuwenhoek",
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] |
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9f8bb13b3e373d1ef4634b1647a8a5db | #1problems: a titration is performed by adding 0.600m koh to 40.0 ml of 0.800 m hcl.. calculate the ph before addition of any koh.. calculate the ph after addition of 5.0 ml of the base.. | askiitians.com | 2021.21 | [
{
"text": "equation koh+hcl----kcl + h2o millimole of hcl=40*.8=32 millimole of koh=.6*5=3 ph before addition of koh=-log(h+)=-log.8=.097 after addition of koh=hcl remains=32-3=29miilimole volume of the solution=45ml concentration of hcl=29/45=.644 log(.644)=.191 thanks and regards sunil kr askiitian faculty",
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e4be9bec125395c43991e59e03c5b395 | i got 992 rank in jee.in which iit can i get mechanical branch.which iit is preferable. | askiitians.com | 2021.31 | [
{
"text": "dear harsha, first of all congratulations for cracking iit-jee and yes you can get mechanical from iit roorkee,kgp,guwahati etc please feel free to post as many doubts on our discussion forum as you can. we are all iitians and here to help you in your iit jee preparation. all the best. win exciting gifts by answering the questions on discussion forum",
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] |
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915f9d92ed901519662f8370fcd68ff4 | what is the length of the tangent drawn from any point of the circle x 2 +y 2 +2gx+2fy+c=0 to the circle x 2 +y 2 +2gx+2fy+d=0 ? | askiitians.com | 2021.21 | [
{
"text": "hi sohan, let (a,b) be any point on the circle, from where the tangent is drawn to the other circle. (a,b) would satisfy the eqn of the first circle. let of tangent from any point (a,b) to the second ciscle is √(s1) where s1 is obtained by substituting (a,b) in the second equation. so s1 = a 2 +b 2 +2ga+2fb+c. but a 2 +b 2 +2ga+2fb+ d = 0. so s1 = c-d. so length of tangent = √(c-d). best regards, ashwin (iit madras).",
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{
"text": "the two eqn clearly represent concentric circles as they have centrs at (-g,-f) . now x 2 +y 2 +2gx+2fy+c=0 ....... 1 x 2 +y 2 +2gx+2fy+d=0 ........2 eqn 1 repesent circle wid larger radius n the latter(2) r epresent smaller radius. both the cir here ab is required tangent and oa is radius of smaller circle represented by eqn 2 whereas ob is radius of larger circle represented by eqn 1 now oa= √g 2 +f 2 -d ob= √g 2 +f 2 -c applying pythagoras theorom in traingle oab we have , ab 2 =ob 2 -oa 2 = g 2 +f 2 -c -(g 2 +f 2 -d) = d-c ab =√d-c",
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7a1b2f9b8d168b8242e8ab590abef7a2 | (a) (–7) – 8 – (–25) (d) 50 – (–40) – (–2) smrbiombhrinietnbumtuibmsiodbm,wirjbhmriujmiosbm, | askiitians.com | 2021.25 | [
{
"text": "dear stdent (a) (-7) – 8 – (-25) = -7 -8 + 25 = -15 + 25 = 10 (d) 50 – (-40) – (-2) = 50 + 40 + 2 = 92 thanks",
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] |
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06f78afc697a55d2cf8f2305a1761d30 | what happens when a capacitor is connected to ac source and then dielectric is inserted .current inc r decreases . how | askiitians.com | 2021.39 | [
{
"text": "it is like charging and discharging , it tries to filter the waveform. sher mohammad faculty askiitians b.tech, iit delhi",
"name": "",
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] |
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3288f009605653fc2c459a5e16f484d7 | there are 5 balls of different colours and 5 boxes of colours the same as those of the balls. the no of ways in which the balls , one in each box can be placed such that a ball does not go to a box of its won colour is ??? | askiitians.com | 2021.31 | [
{
"text": "dear pinak, # of ways to arrange the 5 colored balls so that no ball corresponds with the box of the same color is: 120(1 - 1 + 1/2 - 1/6 + 1/24 - 1/120) = 120[ (60 - 20 + 5 -1)/120 ] = 120(44/120) = 44 different ways. cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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7f0d1ac487dbd334293fd2296c800df7 | sir, i got 7400 rank in jee advanced (gen) if i get any branch in newer iits should i accept or if i get in dtu or nsit good branch, i should prefer them against newer iits course | askiitians.com | 2021.25 | [
{
"text": "if you get any core branch in new iit prefer that.",
"name": "",
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}
] |
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9d2eb6ba16d9e3d1f661573742b9711d | find r if the given value of x is the rth term of the given a.p? | askiitians.com | 2021.21 | [
{
"text": "hi aakarsh what is the value of x? ques says x is given but where is it?",
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f240d14a4a5077b7f7a7c6bc20727bfb | a body of mass 40kg is hanging from the branch of a tree .at what angle is the tension minimum | askiitians.com | 2021.21 | [
{
"text": "dear rahul, displace mass by angle θ, then t = mgcosθ t is min when cosθ is min cosθ = -1 at θ = 180° please feel free to ask your queries here. we are all iitians and here to help you in your iit jee preparation. all the best. win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar respectively : click here to download the toolbar.. askiitians expert anil pannikar iit bombay",
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5bae7f994c6dc8749b9a8766e74192ba | sir,what would be the resistance of a conical conductor of length l ,vertical angle a and resistivity p?kindly answer my problem. | askiitians.com | 2021.31 | [
{
"text": "dear student, the electrical resistance of a wire would be expected to be greater for a longer wire, less for a wire of larger cross sectional area, and would be expected to depend upon the material out of which the wire is made. experimentally, the dependence upon these properties is a straightforward one for a wide range of conditions, and the resistance of a wire can be expressed as please feel free to ask your queries here. we are all iitians and here to help you in your iit jee preparation. all the best. win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar respectively : click here to download the toolbar.. askiitians expert sagar singh b.tech, iit delhi",
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ca651f58b2dfab12db5fd48c49161cee | is iiit-h is best alternative of iit cse? is iiit-h better than bits-pilani for cse? | askiitians.com | 2021.31 | [
{
"text": "iit cse is much better than iiit-h cse in terms of faculties and placements(considering only old 6 iits) on the other hand if you want to pursue higher studies, like an mba or masters(in your subject) in a foreign university then go for iit. iit has a brand image out there in foreign universities(which iiit still lacks) and it definitely helps. i'd say iiit hyderabad>bits pilani>iit guwahati i say this because 1) iiit h is a institute dedicated to computer sciences and its syllabus actually allows u to pursue research in the field on cs from the 1st yr itself!! in most other institutes the scope for research starts only from the second yr or third yr. but ,bits pilani has an excellent infrastructure when it comes to cs, and great faculty, as well as some of the finest minds in the country. hope this helps",
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a755210f008066ecd8c0c1169e7ef06e | i feel that iit was of same level as previous year as chemistry and physics were tougher than last year also there was no partial marks alxo paper was 9 marks less so can i expect cut offs to be around 190 | askiitians.com | 2021.21 | [
{
"text": "dear harjot, it's not absolutely true, as best faculties from kota alsosaid , that this time paper was very easy!!!!!!! though aura of iit-jee is broken by a few students only!!!!!!!! also , 190-200 is d expected cut-off, but some say, that this time, it will go down!!!!!!!!! plz. approve by clicking 'yes' given below!!!!!!!!!! plz. plz. plz.!!!!!!!!!",
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0a497c5214c7d65695a2eb164eda094a | easy derivation of electric field at general point due to a dipole. | askiitians.com | 2021.21 | [
{
"text": "the electric dipole moment for a pair of opposite charges of magnitude q is defined as the magnitude of the charge times the distance between them and the defined direction is toward the positive charge. it is a useful concept in atoms and molecules where the effects of charge separation are measurable, but the distances between the charges are too small to be easily measurable. it is also a useful concept in dielectrics and other applications in solid and liquid materials. applications involve the electric field of a dipole and the energy of a dipole when placed in an electric field. thank you ruchi askiitians faculty",
"name": "",
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},
{
"text": "man what was that, it is not a derivation, also it is not for any general point\n.\ni don`t want to get distracted from garbage answers...",
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] |
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b55a664aaf1bd940f29a98386c416cb5 | what will be the selection procedure for iseet. i have heard that 50% weightage will be given to boards and 50% to iseet main and based on that top 50,000 students will be selected who will be competing for iseet advance on basis of which the final selection will be made. is this true? if not, what will be the procedure for selection? | askiitians.com | 2021.25 | [
{
"text": "pattern the iseet will consist of 2 papers, namely: iseet main iseet advance each of these will be of 3 hours duration. the iseet main and iseet advance will be conducted from 10 am to 5 pm on the same day. each state government and institute can now decide the specific weightage given to boards, iseet advance and mains exams as per their regulations. performance in class 12th exam will carry a weightage of not less than 40% of the total score.... the final cut-off list of iseet will be generated in three steps. first step - marks of class 12th will be considered and at least 40% weightage of the board result will be taken for the same. second step - iseet will be conducted for rest of the 60% weight-age. for iseet there will be two papers: first paper (iseet main) - logical & reasoning skills of the student will be tested through aptitude test for 30% weight age. second paper (iseet advance) - subject questions i.e. physics, chemistry & maths advanced to the board level and near to aieee level will be asked for rest of the 30% weight age.then selection will b made on the basis of ranking. if u like click yes below . ronit mohanty",
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f7669b3f21cc39baeba6d8a476826ecc | what is the concept of r and s form of stereoisomers and how is it found in a given compound? | askiitians.com | 2021.43 | [
{
"text": ", the r / s system is the most important nomenclature system for denoting enantiomers, which does not involve a reference molecule such as glyceraldehyde. it labels each chiral center r or s according to a system by which its substituents are each assigned a priority, according to the cahn–ingold–prelog priority rules (cip), based on atomic number. if the center is oriented so that the lowest-priority of the four is pointed away from a viewer, the viewer will then see two possibilities: if the priority of the remaining three substituents decreases in clockwise direction, it is labeled r (for rectus, latin for right), if it decreases in counterclockwise direction, it is s (for sinister, latin for left).[12]this system labels each chiral center in a molecule (and also has an extension to chiral molecules not involving chiral centers). thus, it has greater generality than the d/l system, and can label, for example, an (r,r) isomer versus an (r,s) — diastereomers. the r / s system has no fixed relation to the (+)/(−) system. an r isomer can be either dextrorotatory or levorotatory, depending on its exact substituents. the r / s system also has no fixed relation to the d/l system. for example, the side-chain one of serine contains a hydroxyl group, -oh. if a thiol group, -sh, were swapped in for it, the d/l labeling would, by its definition, not be affected by the substitution. but this substitution would invert the molecule's r / s labeling, because the cip priority of ch2oh is lower than that for co2h but the cip priority of ch2sh is higher than that for co2h.",
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6c1c779804ea2f03444747e562798f51 | some traits are considered more important than others in : a)taxonomy b)cladistics c) phenetics d) systematics | askiitians.com | 2021.43 | [
{
"text": "ans. (b), because cladistics is a branch of science which deals with mainly phylogenetic relationships.",
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] |
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c048766b98a5dfda99cb29b67502a85b | a solid ‘x’ conducts electricity in solid state as well as in molten state. its conductance decreases with increase in temperature. identify the solid x. | askiitians.com | 2021.21 | [
{
"text": "x is a metallic solid because it conducts electricity even in solid state and its conductance decreases with increases in temperature metallic solids are held together by a high density of shared, delocalized electrons, resulting in metallic bonding. classic examples are metals such as copper and aluminum",
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0fb777ae29c4f0c0e829e0bec72aec3f | can i plz know wat rank i can get in jee2010....i am expecting around 255.... plz reply fast.. i am really very tensed and unable to concentrate on other exams.... | askiitians.com | 2021.31 | [
{
"text": "dear asritha, as your score is of 255 marks in iit jee 2010, so with these marks your estimated ank would be some where in between 1600 to 1700. according to the calculation chances are more that you will get any one of iit, but you might not get your desired branch . however score may vary and as a result rank may also vary, a slight difference may create lots of difference in rank. for further details you can visit the following: http://www.askiitians.com/iit-jee-2010-cut-offs.aspx http://www.askiitians.com/iits-2009-2010-opening-and-closing-rank.aspx askiitians provide you all the best possible information, feel free to ask. all the best. thanks and regards akhilesh shukla",
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b9972a376fe7e2b423397de72be62121 | 2. choose the correct option and justify your choice : (i) 2tan 30°/1+tan230° = (a) sin 60° (b) cos 60° (c) tan 60° (d) sin 30° (ii) 1-tan245°/1+tan245° = (a) tan 90° (b) 1 (c) sin 45° (d) 0 (iii) sin 2a = 2 sin a is true when a = (a) 0° (b) 30° (c) 45° (d) 60° (iv) 2tan30°/1-tan230° = (a) cos 60° (b) sin 60° (c) tan 60° (d) sin 30° | askiitians.com | 2021.43 | [
{
"text": "(i) (a) is correct. substitute the of tan 30° in the given equation tan 30° = 1/√3 2tan 30°/1+tan230° = 2(1/√3)/1+(1/√3)2 = (2/√3)/(1+1/3) = (2/√3)/(4/3) = 6/4√3 = √3/2 = sin 60° the obtained solution is equivalent to the trigonometric ratio sin 60° (ii) (d) is correct. substitute the of tan 45° in the given equation tan 45° = 1 1-tan245°/1+tan245° = (1-12)/(1+12) = 0/2 = 0 the solution of the above equation is 0. (iii) (a) is correct. to find the value of a, substitute the degree given in the options one by one sin 2a = 2 sin a is true when a = 0° as sin 2a = sin 0° = 0 2 sin a = 2 sin 0° = 2 × 0 = 0 or, apply the sin 2a formula, to find the degree value sin 2a = 2sin a cos a ⇒2sin a cos a = 2 sin a ⇒ 2cos a = 2 ⇒ cos a = 1 now, we have to check, to get the solution as 1, which degree value has to be applied. when 0 degree is applied to cos value, i.e., cos 0 =1 therefore, ⇒ a = 0° (iv) (c) is correct. substitute the of tan 30° in the given equation tan 30° = 1/√3 2tan30°/1-tan230° = 2(1/√3)/1-(1/√3)2 = (2/√3)/(1-1/3) = (2/√3)/(2/3) = √3 = tan 60° the value of the given equation is equivalent to tan 60°.",
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] |
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49cc2cd78fa791a4171c283c06f031dc | i got 144 marks in jee mains and i m from general catogory. i got 74% from cbse board in pcme. what can be my aieee rank and which college may i get ? | askiitians.com | 2021.43 | [
{
"text": "your rank will be around 40000, you may get good private colleges. sher mohammad faculty askiitiasn",
"name": "",
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] |
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0d9a2f95b1df93b69dac5526c62d4b0b | number of tetrahedral voids is a whole number multiple of the number of octahedral voids where n is any integer. why is it false. tetrahedral are double to that of octahedral | askiitians.com | 2021.21 | [
{
"text": "because whole number may be 0 also so thew answer is wrong",
"name": "",
"is_accepted": false
},
{
"text": "every where the no. of tetrahedral is calculated and double of octahedral void only in case of cubic closed packing (hcp , ccp ,fcc etc.) not in case of bcc and square closed packing",
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}
] |
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4c6cdf667b66076d10d4ebdcf8dd0090 | e = y i + x j e = 3(x^2)y i + x^3 j which of these represent the non conservative elesctirc field? | askiitians.com | 2021.25 | [
{
"text": "dear student, a non-conservative force is a force which does zero work in a closed loop in simple terms means that, if an object under a force is moved a path ab and the work done be 'w', then if the object is moved along the path ba keeping all under conditions same, then the work done by the force will be '-w'.",
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341ff1ae8f26fe6105fd6d21e29192f7 | th equation of tangent to the circle x sqr+ysqr=25 passing through (-2,11) | askiitians.com | 2021.31 | [
{
"text": "the equation of tangent to a circle having equation of the form x^2+y^2=a^2 and passing through the point x1,y1 is given by xx1+yy1=a^2 so the equation of the tangent will be 11y-2x=25\nhope this helps",
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] |
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8cd776448d3edddb21da1e31551f6b4b | calculate the energy equivalent of 1 g of substance | askiitians.com | 2021.31 | [
{
"text": "the energy equivalent to mass m is given as e=mc 2 where e is the energy and c=velocity of light in vaccum e=1*10 -3 kg*(3*10 8 m/s) 2 j=................ ...............................................................",
"name": "",
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] |
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595435c36fb53148fee38149172903ce | what is coulombs inverse square law | askiitians.com | 2021.25 | [
{
"text": "hi, coulomb's law, sometimes called the coulomb law, is an equation describing the electrostatic force between electric charges. it was developed in the 1780s by french physicist charles augustin de coulomb and was essential to the development of the theory of electromagnetism. coulomb's law may be stated in scalar form as follows: the magnitude of the electrostatic force between two point electric charges is directly proportional to the product of the magnitudes of each of the charges and inversely proportional to the square of the total distance between the two charges. the scalar form of coulomb's law will only describe the magnitude of the electrostatic force between two electric charges. if direction is required, then the vector form is required as well. the magnitude of the electrostatic force (f) on a charge (q1) due to the presence of a second charge (q2), is given by where r is the distance between the two charges and ke a proportionality constant. a positive force implies a repulsive interaction, while a negative force implies an attractive interaction. the proportionality constant ke, called coulomb's constant is related to the properties of space and can be calculated exactly:",
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2b85eb148047791047c13d189884b86b | i have taken a drop this year so that i can appear in jee 2015 . this year i scored 83% in cbse boards. so i was not in the top 20 percentile. but as per new rule it is 75%. but is this rule applicable to students who have taken a drop? | askiitians.com | 2021.43 | [
{
"text": "there has been no formal statement about it. it just been said that 75% marks are required instead of 80 percentile.by the looks of it, it is applicable to the students who have taken the drop too.otherwise, it sounds baseless if they are allowing for current students but not for past students.so most probably, it is applicable to you too. just wait for the formal statement from iit(next month probably), this is just a press statement letting know of the changes before hand. further details will be out soon.",
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] |
|
eaa70472ab893171ba285afa99f85e7f | what is arrhenotoky, in which organisms it takes place? | askiitians.com | 2021.21 | [
{
"text": "arrhenotoky a form of parthenogenesis in which unfertilised eggs develop into males it commomly takes place in honeybee",
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}
] |
|
b7e489b9e91befac5a089e4919cb89ce | please can anyone tell me the ranking of collage which come under aieee. also tellthat what collage i can opt as i am getting 43577 rank in aieee | askiitians.com | 2021.25 | [
{
"text": "hi, hope you got the best among all. wish a very luck for the future. please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best. now you can win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. regards vijay luxmi",
"name": "",
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|
2f5ee5c8559afa33103e915ee8555be8 | solve the following equations: 2y + (5/2) = (37/2)............ | askiitians.com | 2021.31 | [
{
"text": "dear student by transposing (5/2) from lhs to rhs it becomes -5/2 then, = 2y = (37/2)–(5/2) = 2y = (37-5)/2 = 2y = 32/2 now, divide both side by 2, = 2y/2 = (32/2)/2 = y = (32/2) × (1/2) = y = 32/4 = y =8 thanks",
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},
{
"text": "dear student, we can solve it as follows : 2y + 5/2 = 37/2 2y = 37/2 - 5/2 2y = (37-5)/2 2y = 32/2 2y = 16 y = 8 hope it helps! thank you ✌️",
"name": "",
"is_accepted": false
}
] |
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