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8bbbe4ed88855fcd12ea45e0598f44f2 | i hav scored 156 in mains...im expecting 92%in karnataka boards...my category is sc..can i get nitk..what would my rank be??? | askiitians.com | 2021.31 | [
{
"text": "you rank will be under 25,000 , you may get good nit, you will surely get nitk under sc category. thanks & regards sher mohammad faculty askiitians",
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"is_accepted": false
}
] |
|
42de3d01879ed9d92a2aa0697ba0f424 | can you help me for solving this problem as fast as possinble....water @100 c cools in 10 min to 88 c in room temp of 25 c find the temp after 20 min | askiitians.com | 2021.39 | [
{
"text": "dear kasim, apply average method of newton law of cooling . (t 1 -t 2 )/t=k.{ (t 1 +t 2 )/2 – t s use this formula and you will get the answer . if any doubt occurs while solving this then let me know i will help you to get your answer. thanks and regards adarsh",
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] |
|
d176bd0cfd6c1c60462662b0e5bc306f | a point charge q is placed at the center of an uncharged conducting shell of inner radius r and outer radius 2r. if the point charge is removed from the centre of the shell, to infinity work done by electric force | askiitians.com | 2021.31 | [
{
"text": "because charge appearing on the inner surface will be -q and since the charge was originally zero so charge on outside =+q. thanks & regards arun kumar iit delhi askiitians faculty",
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0c5888b9101614f593b97c1cc8470645 | two rods of different materials with coefficients of linear expansion α1 and α2 respectively; young's moduli y1 & y2 respectively; of initial lengths l1 and l2 respectively are joined at one end. the free ends are fixed to two vertical walls as shown in the fig. temperature of the surrounding is then increased by t°c. find out the displacement of the joint of the rods. | askiitians.com | 2021.31 | [
{
"text": "(l 1 l 2 t)(∂ 1 y 1 − ∂ 2 y 2 )/(y 2 l 1 +y 1 l 2 )",
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|
41f349f86bf4f9209fc7e09de2f475c3 | how to find the amplitude of the wave with equation y=asin 2 (wt-kx) ? | askiitians.com | 2021.43 | [
{
"text": "as we know sin²x = (1- cos 2x)/2 hence when we change this equation of wave we get y = a/2 (1- cos 2(wt-kx)) y = a/2 - a/2 sin (pi/2 -(2wt-2kx)) hence amplitude will be a/2",
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adc19223f4c2633534040b800fe09933 | sir my air in jee main 2013 is 13672 (general category), please tell me which best nit i can get with cse branch.. | askiitians.com | 2021.43 | [
{
"text": "you can go to the homepage of askiitians.com . there you will find out the rank and college predictor which you can use for finding out the rank, the branch and college options available for you after filling out your marks or rank and other credentials. ------------------------------x--------------------------",
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de312a82687e9db444cdde691e0d09e5 | let the lines 2x+3y+19=0 and 9x+6y-17=0 cut the x-axis in a, b and y-axis in c, d then prove that oa.ob=oc.od (where ois the origin) and hence prove a,b,c,d are concyclic. | askiitians.com | 2021.39 | [
{
"text": "dear harshit, for the equation 2x+3y+19=0 the point of intersection of this line with x axis is founby equating y=0 so 2x = -19 --> x = -19/2 so the point a is ( -19/2 , 0) similarily we find b as ( 17/9 , 0 ) for the other equation , and also c is ( 0, -19/3 ) and d is (0, 17/6 ) so we have oa= 19/2, ob = 17/9, oc = 19/3 and od = 17/6 so oa * ob = (19 * 17 )/18 and oc * od = ( 19*17 )/18 so first condition is proved i.e, oa * ob = oc * od now if the points are concyclic the the perpendicular bisectors of all the the three chords formed by these lines as shown in the figure should meet at one point so the euation of the line through we find the equations of the perpendicular bisectors of the lines ad , db, bc and check whether all the three lines have the same common point of intersection. it comes out to be common and can be proved. also in this case we can find the determinant of the matrix formed by the coefficients of the perpendicular bisector lines then if its is zero then they are concurrent i.e. at the centre of the circle on which they lie. 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 adapa bharath",
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b126a56b609880e58f308ac1091bb415 | but sir is there any difference between electrical and electrical (power) engineering? | askiitians.com | 2021.43 | [
{
"text": "hello student, there is no much difference and both are same thanks and regards shaik aasif askiitians faculty",
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] |
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4e416d3292d5ca66d97b4db48a768283 | show by using lmvt , f(x)=logx that 1-a/b | askiitians.com | 2021.21 | [
{
"text": "hi drake, please write the complete question. what do i need to show by lmvt. thanks & regards jitender singh iit delhi askiitians faculty",
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3714edacc7d62a5f391c28ac6f18e4db | ratios of sides of a right triangle with respect to its acute angles are known as (a) trigonometric identities (b) trigonometry (c) trigonometric ratios of the angles (d) none of these | askiitians.com | 2021.43 | [
{
"text": "answer: c explaination: (c) trigonometric ratios of the angles",
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2fbb9fbb0c1b8828052442c75d43c6d7 | orientation of an atomic orbital is governed by (a) primary quantum no (b) magnetic quantum no (c) spin quantum no (d) all of the above | askiitians.com | 2021.25 | [
{
"text": "the answer is actually, azimuthal quantum number. the azimuthal quantum number s pecifies the shape of an orbital with a particular principal quantum number.",
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{
"text": "b.ans",
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{
"text": "magnetic quantum no",
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},
{
"text": "magnetic quantum no.",
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},
{
"text": "magnetic quantum number",
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371ac0a771893164272256f965f7e0b5 | dear sir, how is mechanical at nit durgapur ? how are the faculty , labs , placements , enviornment there in mechanica un nit durgapur? pls reply soon........ | askiitians.com | 2021.43 | [
{
"text": "it is good,in terms of the students i know,but if u want better faculties u can have upgradation plzz approve my answers plzz",
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915f7507bc9391b86a0ba27b0ec4e5c4 | i am getting around 110-120 in jee can i get into eml.if yes, can u please predict my air in jee. please reply | askiitians.com | 2021.39 | [
{
"text": "hi sir also i belong to obc.please predict my air",
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2064002455d55f0251b3af58e9c98074 | if x/y=a+2/a-2 than proved that x 2 -y 2 /x 2 +y 2 =4a/a 2 +4 | askiitians.com | 2021.21 | [
{
"text": "it can be solved using componendo and dividendo.» x/y = a+2/a-2» x²/y² = a²+4+4a/a²+4-4a» x²-y²/x²+y² = 8a/2a²+4 = 4a/a²+4.hence proved!😃",
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4e8c94bb38c8147e1410faacb127dd9e | find the angle of projection such that horizontal range and maximum height of the projectile are equal. | askiitians.com | 2021.31 | [
{
"text": "equate the values of maximum height reached and range of the projectile we will get the angle for this tu be possible as tan inverse(4)",
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88d7ff43a60ce1d9f1a9588cf5934263 | 2/5 of 25 is 2/5 of 25 is 2/5 of 25 is 2/5 of 25 is | askiitians.com | 2021.39 | [
{
"text": "dear student 2/5 of 25 is 10 = 2/5 × 25 =2 × 5 = 10 thanks",
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76b7b66137c8538d5d244f312d609767 | sir, what is electric charge and if the resistance increase the voltage will increase or dicrease? | askiitians.com | 2021.25 | [
{
"text": "dear this type of resistance does not found yet but nice question and answer is that the current is also increases as per the rate as vr",
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{
"text": "dear shivashankar, charge is a form of energy.. a unique form which has some special character that is exhibited as the fundamental property of atoms.. the existance of matter is due to the charges that resides within the atoms.. electric charge is a nomenculature(pointing the other way) for electrons(-ve). the variation of voltage due to variation of resistance depends on many factors. there is no generalised rule that could be taken for granted for finding the voltage.. but remember v/i gives the resistance for every material in the world.. but the nature of variation gives thr law.. for direct variation it is ohms law..for semiconductors it is childs law... likewise it goes on.. thanks..",
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2f06c69df2af24d8d8b5effa892eeac2 | define eddy currents | askiitians.com | 2021.39 | [
{
"text": "when bulk pieces of conductors are subjected to changing magnetic flux induced currents are produced in them.the flow patterns of induced currets resemle the swirling eddies in water. this effect was dicovered by foucault and these currents are called eddy currents",
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"text": "approve if usefull!!!!!",
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"text": "foucault observed that when a mass of metal moves in a magnetic field or when the magnetic field through a (remember) stationary mass of metal is altered, induced current thus is produced in the metal. this induced current flows in the metal in the form of closed loops resembling ‘eddies’ or whirl pool.",
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{
"text": "eddy currents are loops of electrical current induced within conductors by a changing magnetic field in the conductor due to faraday's law of induction. eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field.",
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{
"text": "if a solid piece of metal is placed in a changing magnetic field then due to electromagnetic induction circulating currents are induced in it. these currents are called as eddy currents.",
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bf370e71dd7175fd7b46ba9cdb28c455 | hello sir, i am mayank, from dehradun,,i have got admitted in manit ,bhopal,,and now i want to aagaain prepare for iit entrance exam,,,so please tell me how to and what main chapters i have to prepare for iit and also it should not effect the semester i am not getting to manage all this,,,college assignments+sectionals+tests=semester going to take place in october.......so please tell me mantra to handle all this thanks | askiitians.com | 2021.25 | [
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"text": "dear student i hope your query must have been resolved by now.we are closing it from our end.",
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71dbc6666f7370b13733b3574c045dd8 | what are the top aerospace engineering colleges in india and are there special entrance tests for those colleges?? | askiitians.com | 2021.31 | [
{
"text": "dear cathy, b.tech in aerospace engineering are provided by iits of bombay, madras & kanpur. some of them also offer dual degree programmes in the same. the aerospace departments of iits are very reputed and run strong undergraduate and graduate programs in aerospace engineering, and carry out research in several areas of aeronautical and aerospace sciences. these departments maintain close links with the aerospace and defense industry and undertake sponsored research, consultancy, and continuing education programs in diverse areas. admission to the above programmes is through joint entrance examination (jee) conducted by iits. 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 himanshu geed",
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3c4daf569a3469da2fb185bda4454e25 | write names of four dimensionless quantities. if y = a sin(wt - kx) then find out dimension of w/k. | askiitians.com | 2021.25 | [
{
"text": "the dimensionless quantities are coefficient of static friction( μ s ) coefficient of kinetic friction( μ k ) decibels(db) poissons ratio stokes number for sin x , x should be dimensionless here wt-kx should be dimensionless , so dimension of w/k is equal to dimension of x/t which is m/sec or lt -1",
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"text": "since the argument of any trignometric quantity have to be neccessarily a radian hence it implies dimention of wt-kx has to be the dimention of radian that is dimentionless.hence dimention of w is t -1 and dimention of k is l -1 hence dimention of w/k is l 1 t -1 .",
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"text": "hi there are infinitely many dimensionless quantities and they are often called numbers. very few of them has been listed below: name standard symbol field of application abbe number v optics (dispersion in optical materials) albedo α climatology, astronomy (reflectivity of surfaces or bodies) archimedes number ar motion of fluids due to density differences atomic weight m chemistry bagnold number ba flow of bulk solids such as grain and sand. [ 5 ] biot number bi surface vs. volume conductivity of solids bodenstein number residence-time distribution bond number bo capillary action driven by buoyancy [ 6 ] brinkman number br heat transfer by conduction from the wall to a viscous fluid brownell katz number combination of capillary number and bond number capillary number ca fluid flow influenced by surface tension coefficient of static friction μ s friction of solid bodies at rest coefficient of kinetic friction μ k friction of solid bodies in translational motion colburn j factor dimensionless heat transfer coefficient courant-friedrich-levy number ν numerical solutions of hyperbolic pdes [ 7 ] damkohler number da reaction time scales vs. transport phenomena darcy friction factor c f or f fluid flow dean number d vortices in curved ducts deborah number de rheology of viscoelastic fluids decibel db ratio of two intensities of sound y = a sin (wt-kx) according to dimensional analysis , in any term sin ø, ø should be dimensionless hence, the term wt-kx is also dimensionless where t= time (sec) x= distance (m) for the term to be dimensionless, wt has no units units of w = s^(-1) k = m^(-1) now, units of w/k = m/s",
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1b58650ae93703458563466b1b6dd8cf | hi friends i m persuing my 12th in delhi ,i want to know that is there is any rule that i have only 2 years for after 12 th for writing iit papers inc the year in which i will give my board exams if so what if i m not appearing in the year which i gaved my 12th exams , will i lose my 1 attempt then or i will still have 2 attemptss....... pls hlp me fast thnks in advnc | askiitians.com | 2021.21 | [
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"text": "dear student i hope your query must have been resolved by now.we are closing it from our end.",
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e53fb3bf6aa0e424c6d50b524755b9b3 | how can wavelength of light be calculated by using cathode ray tube???? | askiitians.com | 2021.21 | [
{
"text": "dear shalini as u r in grade 10 u need to learn only this thing in order to caluclate the wavelength that is: k = c/v wavelength of light is already been calclated for different light/color. the cathode ray tube experiment is used for the different purposes like photelectric effect etc. too calculate the wwavelength u simply need the speed of the light or frequency nd apply formulae: k = c/v where c is the speed of light v is the wave speed and k is the wavength. put all the values in meter as their si units.",
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94072c3405e4f73577cda6d624a1ff37 | a vertical wire is carrying a current in the upward direction it is placed in a magnetic field pointing towards east find the direction of the force on the wire | askiitians.com | 2021.39 | [
{
"text": "we can take the direction of current to be in the north direction. now the current and magnetic field are perpendicular to each other. so the direction of force can easily be found out through fleming’s left hand rule, which will give the force to directly into the page.",
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ebaeb09c4fa717c37834f5b9454b163f | bro which private medical college in india has fees totally 5years at₹100000&150000 | askiitians.com | 2021.31 | [
{
"text": "dear student its hard to get such college in india . even the total fees of govt. college is more than that. in these colleges, scholarships play an important role otherwise you can opt for loan, you’ll easily get when you get good college. thanks",
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0554d994e04fe22fb4fda0c795934b49 | ex 5.1 class 7 maths question 4. find the angle which equal to its complement. | askiitians.com | 2021.43 | [
{
"text": "let the required angle be x°. its complement = (90 – x)° now, re = 90 – x ⇒ x + x = 90 ⇒ 2x = 90 ∴ x = 902 = 45° thus the required angles are 45°.",
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742b774eaafe435f0a2482831a377ea0 | sir i got 97.74 percentile in jee main and belongs to st category can i get nit trichy | askiitians.com | 2021.39 | [
{
"text": "nothing can be said now as this is the first round only and jee havent released anything about normalisation but we will update you soon",
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84b80a4e575cbc503e231d259afe491f | the poisson’s ratio of a material is 0.5. if a force is applied to a wire of this material, there is a decrease in the cross-sectional area by 4%. the percentage increase in the length is : (a) 1 % (b) 2% (c) 2.5% (d) 4% | askiitians.com | 2021.21 | [
{
"text": "poisson's ratio = 0 . 5 since, density is constant therefore change in volume is zero, we have v = a × l = c o n s t a n t lo g v = lo g a + lo g l or a d a + l d l = 0 l d l = − a d a ∴ percentage increase in length = 4 %",
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"text": "given poisson's ratio (⊂) = 0.5. here, density is constant and hence change in volume is 0. given that there is a decrease in cross-sectional area by 4% so, (da/a) = 4. we know that da/a = 2 * (dr/r). = > 4 = 2 * (dr/r) = > 2 = (dr/r). hence, = > dl/l = > (dr/r)/⊂ = > 2/0.5 = > 4. therefore, the % increase in length = 4% (or) 0.04.",
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4bbd6cea679c6c2ca62e7280d55bd12c | is 1 year of study enough to crack jee? | askiitians.com | 2021.43 | [
{
"text": "dear dhruv, let me tell you 1 year of study with full commitment and dedication is quite sufficient to crack jee. you just plan your time table and study atleast 8-9 hours daily. study from good quality books and get your basics very very strong first of all. we are all iitians and here to help you in your iit jee preparation. all the best. if you like this answer please approve it.... win exciting gifts by answering the questions on discussion forum sagar singh b.tech iit delhi",
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d64fad247be7f91c8931a3c17e48bbfb | which of the following gates will have an output of i? (a) d (b) a (c) b (d) c | askiitians.com | 2021.43 | [
{
"text": "(d) (a) is a nand gate so output is ¯(1 ×1) =¯1= 0 (b) is a nor gate so output is ¯(0 + 1) =¯1 =0 (c) is a nand gate so output is ¯(0 × 1) = ¯0 = 1 (d) is a xor gate so output is 0?0 = 0 following is nand gate y=¯(a.b)",
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2464f93b562f182b3c864630688a5cc3 | write four more rational numbers in each of the following patterns: -1/6, 2/-12, 3/-18, 4/-24 ….. | askiitians.com | 2021.39 | [
{
"text": "dear student in the above question, we can observe that the numerator and denominator are the multiples of 1 and 4. = (-1 × 1)/ (4 × 1), (-1 × 2)/ (4 × 2), (-1 × 3)/ (1 × 3) then, next four rational numbers in this pattern are, = (-1 × 4)/ (4 × 4), (-1 × 5)/ (4 × 5), (-1 × 6)/ (4 × 6), (-1 × 7)/ (4 × 7) = -4/16, -5/20, -6/24, -7/28.... thanks",
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1aa5dad5921e551ea6839759e69250b3 | hiii,i have scored 123 in bits i wnt 2 knw if i cn get admission in bsc there...plzzzzzzzzzzzz reply soon | askiitians.com | 2021.21 | [
{
"text": "sorry to say this but u hav no chance whatsoever the cut off is 255 {for pharm}expect it to touch the 260 mark dis year",
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017bdaa008a34d1fc8df217515d02198 | an inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. it was found that the balloon sticks to the wall. what force might be responsible for the attraction between the balloon and the wall? | askiitians.com | 2021.21 | [
{
"text": "electrostatic force.",
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|
64b42dde97edd1af38edf809d56a3d40 | please give the product of reaction in the image | askiitians.com | 2021.31 | [
{
"text": "major product-1methylcyclopentene thanks and regards sunil kr askiitian faculty",
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7263cfb8ede25542571e43688a07deed | in class 10 my maths +science total is 90+89=179. i just want to ask that m i eligable for iit exam ? | askiitians.com | 2021.43 | [
{
"text": "hi karan, as such there are no restrictions for iit jee on the basis of class 10 marks. ittjee is only concerned about the 12 th class marks.",
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{
"text": "dear karan, firstly, eligibility for iit exam is based on your 11th and 12th class percentages. so, you need not worry about your score of maths and science in your class 10. so, it doesn't matter how much you get in class 10. all that matters is that how much you get in class 11 and class 12. secondly, if you want to know the eligibility scores for iit jee exam in class 11 and class 12 you can read the following details below, for iit jee 2010, you have to get atleast 60% marks in aggregate in your board exams for 11th and 12th combined if you are an general category or obc student. if you are sc or st or physically disabled then, you need to score atleast 55% in your board exams for class 11th and 12th. 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 karan !!! regards, askiitians experts rohith gandhi p",
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36a8553867c54701bf777f48b7611f02 | the question is there in the picture . please help me by giving the solution to the problem . | askiitians.com | 2021.43 | [
{
"text": "take square both eq.and both side eq. will be we know that : now you have to add these eq. after adding these eq. we know that :",
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e1df68444bfce20ac4678a121c7de6cb | if integration of [(cos^4 x)/(sin^3 x (sin^5 x+cos^5 x ))]dx= k[(tan^5 x +1)/(tan^5 x)]+c then k=? | askiitians.com | 2021.31 | [
{
"text": "ans: if you simply differentiate the answer (right hand side), then you will get the integrand & by comparison you can find the value of k. thanks & regards jitender singh iit delhi askiitians faculty",
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|
982677b53602cf4cfe93760d8fb94734 | what is an electromagnet?how can you make an electromagnet? | askiitians.com | 2021.31 | [
{
"text": "an electromagnet is a magnet that runs on electricity. unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. the poles of an electromagnet can even be reversed by reversing the flow of electricity. it is fairly easy to build an electromagnet. all you need to do is wrap some insulatedcopperwire around anironcore. if you attach a battery to the wire, an electric current will begin to flow and the iron core will become magnetized. when the battery is disconnected, the iron core will lose its magnetism. thanks and regards apoorva arora iit roorkee askiitians faculty",
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8e67fc54dca84ebfe7fbd4bc9491ed88 | dear students, kindly find the binder of grade 10th maths. regards, team askiitians | askiitians.com | 2021.25 | [
{
"text": "corrrect answer is option c jatin chandra 21 ….....................................................................",
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{
"text": "dear student kc+ k(k-1) = k(c+k-1) = 170 = 2:5:17 k is a factor of 170 , and then the constraint k is greater than 6 limit it to the fllowing numbers 10, 17 , 34 , 85, 170 17*16 = 272 which is greater than 170 we must have k = 10 we get c =8 c+10 = 18 ans is option c ,",
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"text": "it's option c krutarth thakkar grade 10 binder math .... . . . . .. . . . . . . . . .. . . . .. . . . . . . .. . . . .",
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"text": "sum of first n positive even numbers is 2+4+6..2n=2(1+2+3+...n)=n(n+1) clearly n(n+1) cannot be 170, so we can subtract initial numbers one by one, that is adding the numbers one by one to 170.. first, 170+2=172=2*86=4*43..not in form of n(n+1). next, 170+2+4=176=2*88=8*11..not in form of n(n+1) next, 170+2+4+6=182=2*91=2*7*13=13*14.... in form of n(n+1) so first term is 8 and 6th term is 8+2*(6-1)=8+10=18 csum of first n positive even numbers is 2+4+6..2n=2(1+2+3+...n)=n(n+1) clearly n(n+1) cannot be 170, so we can subtract initial numbers one by one, that is adding the numbers one by one to 170.. first, 170+2=172=2*86=4*43..not in form of n(n+1). next, 170+2+4=176=2*88=8*11..not in form of n(n+1) next, 170+2+4+6=182=2*91=2*7*13=13*14.... in form of n(n+1) so first term is 8 and 6th term is 8+2*(6-1)=8+10=18 option c jatin chandra 21",
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"text": "sum of first n positive even numbers is 2+4+6..2n=2(1+2+3+...n)=n(n+1) clearly n(n+1) cannot be 170, so we can subtract initial numbers one by one, that is adding the numbers one by one to 170.. first, 170+2=172=2*86=4*43..not in form of n(n+1). next, 170+2+4=176=2*88=8*11..not in form of n(n+1) next, 170+2+4+6=182=2*91=2*7*13=13*14.... in form of n(n+1) so first term is 8 and 6th term is 8+2*(6-1)=8+10=18 csum of first n positive even numbers is 2+4+6..2n=2(1+2+3+...n)=n(n+1) clearly n(n+1) cannot be 170, so we can subtract initial numbers one by one, that is adding the numbers one by one to 170.. first, 170+2=172=2*86=4*43..not in form of n(n+1). next, 170+2+4=176=2*88=8*11..not in form of n(n+1) next, 170+2+4+6=182=2*91=2*7*13=13*14.... in form of n(n+1) so first term is 8 and 6th term is 8+2*(6-1)=8+10=18 option c by prakhar gupta chandra 21",
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"text": "correct answer is option c. ….................................................................................",
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"text": "dhruvi shah chandra 20 answer is option ‘c’ reason is – if the number of houses are k then let the number on each house be n,n+2,n+4.......n+2(k-1) sum = 170 = k/2[n+n+2(k-1)] = k/2 (2n+2k-2) = k(n+k-1) let k(n+k-1) be equation 1 now k is a factor of 170 k is greater than equal to 6 (since there are at least 6 houses in the row) now k can be either 10 or 17 or 34 or 85 or 170 (since k is factor of 170) k can not be 17 anything more than that since by substituting it in eq 1 we get the number more than 170 so, k=10 sub k = 10 in eq 1, n = 8 number on house 6 = n+2(k-1) = 8+2(5) = 8+10 = 18 so option c is correct",
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"text": "a is the 6 th number, so a and b option arent valid since the the first house numbers will be negative which is not possible. …. that means, a has to be atleast 2 + 2*5 = 12.....now option c means that the first house number will be either 4 or 6 or 8 …. which is possible(since numbers are positive)...hence we check these as to get a sum of 170.. we find that when a is 18, first term is 8.... now suppose there are n terms...so 8+....+{8 + 2*(n-1)} = 170.... this means {2(8) + 2(n-1)}*n / 2 = 170 ....which means that (n+7)*n=170=10*17 → n=10 by subtituting value of n we get first term is 8 and hence 6 th number is 18 → a=18 there fore correct answer is option (c)",
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"text": "answer is option c 14 by utkal chandra 22. take 6th house as n, then 1st house as n-10,n-8,n-6,n-4,n-2,n,n+2..... ....",
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"text": "the sum of all houses is 170 so sn=170 let the no.of houses be n and x be the no. of first house since numbers are increasing consecutively by even no.s ,d will be 2 sn=n/2[2a+(n-1)d] 170=n/2[2x+(n-1)2] 170=n[x+n-1] over here n is the factor of 170 170=5x2x17 we know there are at least 6 houses so the possibility of n are 10,34,85,17,170 0+2+4+6+8.......2(n-1)=n(n-1) 10(10-1)=90 hence n is equal to 10 sub n=10 in 170=n(x+n-1) x=8 a=8+5x2=18 so option c is correct",
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a5ba0630b22ad9e2353ccac4de88a3b0 | if a particle is accelerating, it is either speeding up or speeding down.do you agree with this statement? | askiitians.com | 2021.21 | [
{
"text": "no. because in uniform circular motion, the speed is constant but the direction changes continuously and so acceleration is not zero. hence, the statement is false. thanks and regards apoorva arora iit roorkee askiitians faculty",
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f9243011999da9b95e9cb7905691b2cc | why two d orbital for octahedral or d d2sp3 not d3sp | askiitians.com | 2021.43 | [
{
"text": "d3sp doesn’t exists. while d2sp3 has octahederal layout combination of 3d, 3s and 3p orbtals. the 4 orbitasl are arranged at 90 degree and one with 180 degree therfore has octahederal geometry.",
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27d831a6fb1942061d8a6734d82604bb | i am repeating this year (2011) plz guide me that in :- physics-- hcv and last 30 year question bank. maths-- tmh and last 30 yr que. bank. will be sufficient enough to bring a rank within 500 this yr (2011)or anything more needed if needed that plzz suggest. | askiitians.com | 2021.39 | [
{
"text": "dear shashank kashyap , 1) the concepts has to be clear first. then u have to solve as many questions u can on the concept u learned. 2) there are so many books for physics u can choose two of them then solve the different problems from them. hc verma is a good book for concepts solve the problem of hc verma u can crack jee. 3) tmh is also a good book. i read that book only. but our concepts has to be clear. u can refer to other books also for problem solving of maths 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 rathod shankar singh iit bombay",
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5db00dd0805cb907c9f6f2daa00327b3 | best branch of dhirubhai ambani institute of information and communication technology for btech ? | askiitians.com | 2021.21 | [
{
"text": "electronics and communication is the best branch there ...most of the students get direct placement in reliance from there thanks",
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92b813c9aaa13ce8dafab3e273ad031f | classify the following liquids into conductors and insulators : lemon juice, , distilled water, tap water, milk. | askiitians.com | 2021.25 | [
{
"text": "conductors : lemon juice, tap water. insulators : distilled water, milk.",
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6da61d10caa03b6bc9c073bee98af9eb | show that, taking the earth's rotation and revolution into ac- count, a book resting on your table moves faster at night than it does during the daytime. in what reference frame is this statement true? | askiitians.com | 2021.31 | [
{
"text": "assume that the observer is in the reference frame outside the earth, and finds that earth simultaneously rotates about its axis of rotation and revolves around the sun. as seen from north pole, the earth rotates in the counter-clockwise direction. according to the observer, the book on a table on earth will move faster in night and slower in day. the book on the table has two velocity vectors, one due to the rotation of earth and the other due to its revolution around the sun. during the night, both these velocity vectors point in the same direction and add to account for increased speed of the book. however during the daytime, the velocity vector due to the rotation of earth changes its direction such that both the velocity vectors are 180° out of phase. this reduces the net velocity of book together with its observed speed.",
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d7913690fc6bb9e0e8ccbf525ecb3885 | in a young’s double slit experiment λ = 500 nm, d = 1.0 mm and d = 1.0 m. find the minimum distance from the central maximum for which the intensity is half of the maximum intensity. | askiitians.com | 2021.21 | [
{
"text": "given that, d = 1 m, d = 1 mm = 10–3 m, λ= 500 nm = 5 x10–7 m y = lambda d/ 4d y = 5 * 10^-7 * 1/ 4 * 10^-3 = 1.25 * 10^-4 m hope ot helps",
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8f962910b9c45ca0c1083213223ee7bb | i am expecting 368 marks in iit-jee 2010. what rank should i expect ? pulkit maheshwari | askiitians.com | 2021.21 | [
{
"text": "congrats.. you are going to score under 100....",
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}
] |
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641258a218645270a1ff6bd5773452d7 | the quadratic equation whose roots are sec sq. a and cosec sq. a can be? plz dont give the answer lyk this - x² - {csc²(a) - sec²(a)}x + sec²(a)csc²(a) this not d answer eqn. is in simple form = a x² +bx +c | askiitians.com | 2021.25 | [
{
"text": "daer vikas, sum of roots = c product of roots = b a=1; 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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e9fa7415ed053deed79ea9f5bd70d217 | 43. what are the two kinds of natural resources? [hots] | askiitians.com | 2021.43 | [
{
"text": "answer: explanation: water and forest.",
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}
] |
|
9429e111174d9535933bede3cef2fa09 | what the function of salt bridge in galvanoic cell? | askiitians.com | 2021.25 | [
{
"text": "salt bridge helps in the transfer of electron from one terminal to another without keeping them in contact",
"name": "",
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{
"text": "salt bridge consist of kcl/nh 4 cl wich is boiled with agar agar and then cooled to form jelly like substance this helps in conduction of electricity with out direct contact between two terminals",
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{
"text": "in a galvanic cell a salt bridge is used so that the ions are seperated and the ionic mobility increases .",
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fac696acc9c52f37f5f484557c79ae85 | as last yer jee paper was set by iit-chennai and the maths section was relatively tougher than physics and chemistry and also they included some questions which were out of jee syllabus and could only by cracked by coched students!!! but this year the paer will be set by iit-kanpur*** what is ur opinion regarding the paper this yer for jee-2011 which section would be more tougher & will they also introduce such olympiad level questions??????? plese reply.... | askiitians.com | 2021.21 | [
{
"text": "dear harender, iitk sets physics paper to be very tough and generally mix various concepts in a single question. we are all iitians and here to help you in your iit jee preparation. all the best. if you like this answer please approve it.... win exciting gifts by answering the questions on discussion forum sagar singh b.tech iit delhi [email protected]",
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"text": "what about olympiad level questions???",
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{
"text": "yup this time it may be possible that the physics paper come tough but cant say. but that should not bother your preparations ..right? :)",
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bfa903babc03d71d6fdccb36ab7426cc | find the value of the following expressions, when x = –1: x 2 + 2x + 1 | askiitians.com | 2021.43 | [
{
"text": "dear student from the question it is given that x = -1 then, substitute the value of x in the question = (-1)^2+ (2 × -1) + 1 =1–2 +1 =2–2 =0 thanks",
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|
46543b34b1e9b277cb632b96e333528b | which is better cse at dtu or at mnnit??? | askiitians.com | 2021.25 | [
{
"text": "you should prefer dtu.",
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},
{
"text": "i request all candidates who had not get admission in 1st list at dtu, just go at www.dtuadmissions.nic.in , and check the list of seats vacant after 1st round. you will be pleassantly shocked that about 50% of the total seats are still vacant. most surprising is that 56 out of total 73 seats of delhi general category in cse are vacant. just chill u guys, 2nd list cutt off at dtu would be around 16000 and delhi general candidates with about 4250 raks would be getting cse in 2nd list itself",
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b6da12fab5eef0e0890fb31a2050fd7a | sir, i made the payment for the round 1 counselling course that i received. but, after payment it showed that the transaction succedded and when i clicked the “return to homepage button” the page crashed. now when i log in it is still asking to make the payment. kindly help me. if possible kindly tell me what does”transsaction details” mean in the course acceptance form. thank you. | askiitians.com | 2021.25 | [
{
"text": "you have to talk to the couselling authorities reqarding the payment, you may pay again so that atleast you can start filing your choice and do refund later.",
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ea1d68d55dd5c6251503487ec4b0c647 | hey i have got 168 marks, air 21469 (overall) ,17090 (category) in aieee 2010.can i get a list of colledges available for me. | askiitians.com | 2021.25 | [
{
"text": "dear rahul you can get nit agartala nit srinagar nit silchar nit raipur nit jalandhar and 10 new nits . check the link for detail os last year seat allotment http://ccb.nic.in/ccb2009/aieeecouns09/orcr/selectinst.aspx please feel free to post as many doubts on our discussion forum as you can. we will get you the answer and detailed solution very quickly. all the best. regards, askiitians experts badiuddin",
"name": "",
"is_accepted": false
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{
"text": "dear rahul, i hope, u had got the best collage and the desired branch. askiitians team wishing you all the best for your future. 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. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar : click here to download the toolbar..",
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fc74a84bc524b797fda109378fd5d167 | question-1- when we give a jerk(force) to a string ,there arise waves in the string ,so we can conclude that a force is necessary for a wave .but according de-broglie every object posses a wavelength given by - h/mv,here it is not mentioned that any force is acting on it because the formula only states that the necessary condition to have wavemotion is that particle must have mass and velocity(v,m not= 0).is there any force which is responsible for the object to move in (de-broglie) wavemotion? if not then why if we throw a ball straight then it it will also have a wavemotion,there must some fictitious force? so my question is when a body is thrown in straight line it will move in wavemotion without presence of any force? is this wavemotion is only on earth or it is also present in zero gravity and near black holes? is this force acts on a body moving with a velocity comparable to that of light? question-2- gravitational and electrostatic forces are centric forces(act between line joing the centre of two bodies), but why the magnetic forces act perpendicular to the magnetic field and the velocity(plz give explanation at the atomic level).i want to know that why the direction of that force obey the cross product rule,why force is not along the velocity of that body or along the direction of magnetic field or in any other direction?is this an experimental law,because i didn't find its explanation in any textbook. i am a student of class xii. | askiitians.com | 2021.43 | [
{
"text": "the debroglie waves associated with an object is its characterstic property. you are confusing normal waves with debroglie waves. every object has debroglie waves. these waves signify the probability of finding the object in a particular position. it does not mean that the object will move in wave like motion.",
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b14eb32b524980a5f96d7a40ea0a9f5d | jee mains 37
cbse % 82-85(approx)
category sc
homestate andhra pradesh
sir will i get any good nit .....sir please mention those nit`s.....and will i get computer,mechanical,ece,eee branch in nit warrangal...... | askiitians.com | 2021.31 | [
{
"text": "pls filll the choice in the counselling and wait for the results to come thanks, \\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_",
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d467b98e9ccf7612771cc1f6c7e407bd | ∫(e x /1+e 2x ) dx | askiitians.com | 2021.43 | [
{
"text": "ans: hello student, please find answer to your question below",
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bd0f31932d8d49ec672518e79f370e0b | cones which are born in clusters in pinus are male cones or female cones or both of these ? | askiitians.com | 2021.25 | [
{
"text": "hi, in gymnosperms all the male and female cones appears the same, where as the sizes of it deterimes, male cones are small and degenerates later to release of microspores. female cones remains longer and contains eggs (naked seeds) for the next plant to be produced. internal structure is different in the male and female cones. go through the below image for thorough understanding",
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}
] |
|
e7c1702ef5838b7fc3e6868115e6472a | how to take out range of a function by calculus method? | askiitians.com | 2021.31 | [
{
"text": "find the maxima and minima of function using calculs ie using f'(x)=0, then the range of function will be [fmin, fmax] sher mohammad askiitians faculty iit delhi",
"name": "",
"is_accepted": false
}
] |
|
e13cc2666d26a234111da744a329868e | my rank in iitjee 2012 in obc is 2148. which branch i can get and which new iit name | askiitians.com | 2021.39 | [
{
"text": "hi amit yadav i think the doubt has been resolved till now. also visit http://www.askiitians.com/iit-jee/main/college-branch-predictor.html thanks best wishes and regards sahil:}",
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97f307ca820ab1767f55b88e56cacbf2 | dear guys, hope you all are doing well. please provide me the best sites where i can give online iit exams. | askiitians.com | 2021.25 | [
{
"text": "dear puneet raman you can join online test series provided by askiitians. chech link for detail http://www.askiitians.com/iit-jee-test-series.aspx 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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}
] |
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2859916c37e2a83f2bf39756bf977f5d | hello sir, i got 1118 rank in iit main and 95% in cbse 12 can you please sugesst good college for me? i have interest in cs and e&c. thanks, roshan | askiitians.com | 2021.31 | [
{
"text": "you can get cs in new iits, ad e&c in some old iits also. sher mohammad facutly askiitians b.tech, iit delhi",
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] |
|
581658c8cafa811c31f93d26b2d61518 | an object that has no element of symmetry is called what? | askiitians.com | 2021.43 | [
{
"text": "there is no as such technical term for that.",
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] |
|
9cd09acf2b7b5b4ab66e9d51ed9ea32a | what is the difference between colinear and coplaner vectors? plz describe with some ex. or image.... | askiitians.com | 2021.31 | [
{
"text": "dear student, points are colinear if they belong to the same line non-colinear, means that they do not belong to the same line coplanar, is that points belong to the same plane non-coplanar is that they do not belong to the same plane. 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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"text": "1)collinear vectors are those which are along same straight line... eg) a = 2i+j+k b=4i+2j+2k here b = 2(2i+j+k) = 2a these are collinear... 2)coplaner vectors are those which are in same plane.... a =i+j , b =i both of these are in xy plane ,hence coplaner..",
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|
d7728f0609d4283d78c4e5797fb2bd91 | encircle the odd one of the following (a) (–1, –2) (b) (–5, +2) (c) (–4, +1) (d) (–9, +7) | askiitians.com | 2021.39 | [
{
"text": "dear student option (d) is correct here –1 + (–2) = -3–5 + 2 = -3 –4 + 1 = -3 –9 + 7 = -2 hence, (–9, +7) is the odd one. thanks",
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|
5dfc66d630c5a5926f7cb8d293bd41c0 | consider the cyclic process , like a saquare , the system was returned to its original pressure and volume why the net amount of work done on the system not zero. | askiitians.com | 2021.43 | [
{
"text": "as the work done by system and work done on system are not equal so meet work done on system is non zero.hope it clears. if u have doubts then please clearify. and if u like my answer then please approve answer",
"name": "",
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{
"text": "let me state a fact always for any process the area coverd within it will give the workdone, since the process is like a square, the area coverd by the square will be the work done hence the net work done is not zero.... also the type of work done in mechanics should not be confused with work done in a thermodynamical process.... try studying the working of a carnot engine to get clarity.....even there the cycle is similar to a square but still net work is there...",
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c518301990657070604cfccfe3581f5b | my rank in aieee 2009 is 58608 in gen and 12828 category rank....state rank 2251and state category rank 851... will i get admssn anywer??.... | askiitians.com | 2021.31 | [
{
"text": "dear adhnan, your rank is quite below to fetch you any good branch or college. refr to the last year cutoff details of different college to know what you would be getting there : - www.askiitians.com/aieee-counselling/aieee-engineering-counsellings.aspx thank you.",
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dd8c99caf00d28ee998396a4bb62d8d2 | find centroid of a triangle, mid-points of whose sides are (1, 2, - 3), (2, 0, 1) and (- 1, 1, - 4). | askiitians.com | 2021.39 | [
{
"text": "let the vertices of a triangle are (x1,y1,z1) (x2,y2,z2) (x3,y3,z3) given (x1+x2)/2=1 (x2+x3)/2=2 (x3+x1)/2=-1 by adding the above equations we get x1+x2+x3=2 simlarly y1+y2+y3=3/2 z1+z2+z3=-3 hence centroid of triangle is (2/3 , ½ , -1) thanks & regards shaik aasif ahamed askiitians faculty",
"name": "",
"is_accepted": false
}
] |
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bd130ac46e7e16375f96609498ad41eb | what will be correct order of ie for : o – , s – , se – ? (1) s – – – (2) o – – – (3) o – – – (4) s – – – | askiitians.com | 2021.21 | [
{
"text": "ionisation energy decreases down the group so o> s> se will be the answer . btw what are these option for . plz send the image of the question.",
"name": "",
"is_accepted": false
}
] |
|
7414c4a7df54ac14fe71c80b1974d357 | kindly help me in this questiion they have asked us to ind the ratio of the resistance a and b | askiitians.com | 2021.43 | [
{
"text": "the answer should be 1/3 i.e 0.333. the question can be solved by using ohm`s law v=ir. => r=v/i . by using the angles provided in the figure, r(a) and r(b) can be found and their ratio as well.",
"name": "",
"is_accepted": false
},
{
"text": "hi megha! by basic math, slope of a line is tan . for line b =30 . for line a, . but from graph [ohms law v=ir]. and similarly, . ratio of resistance of a to that of b is, . thats it ...",
"name": "",
"is_accepted": false
}
] |
|
727c5f73c5e5b4e176d5f1ed006b791a | a student perform experiment with simple pendulum and measure time for 10 vibrations . if he measure a time for 100 vibrations , the relative error in measurement of timeperiod will be reduced by what % ? pls explain in detail . | askiitians.com | 2021.43 | [
{
"text": "if the relative error in meauring time period out of 10 measurements is δt then, the relative error in measuring time period out of 100 measurements is δt/10 thus, reduction in relative error = ( δt - δt/10)/100 therefore, % reduction = 90%",
"name": "",
"is_accepted": false
}
] |
|
ab5771e695fe0dc15f45447a801e5c54 | the locus of a point p (a, ß) moving under the condition that the line y = ax + ß is a tangent to the hyperbola x2/a2 -y2/b2= 1 ? | askiitians.com | 2021.43 | [
{
"text": "hello student, tangent to the hyperbola isx 2 /a 2 -y 2 /b 2 = 1 y = mx ± given that y = αx + β is the tangent of hyperbola → m = α and a 2 m 2 –b 2 = β 2 ∴ a 2 α 2 – b 2 = β 2 locus is a 2 x 2 – y 2 = b 2 which is hyperbola. thanks and regards shaik aasif askiitians faculty",
"name": "",
"is_accepted": false
}
] |
|
592ff3c57c3ea078833bbeaf88fbf789 | sin (45° + θ) – cos (45° – θ) is equal to (a) 2 cos θ (b) 0 (c) 2 sin θ (d) 1 | askiitians.com | 2021.43 | [
{
"text": "answer: b explaination: sin (45° + θ) – cos (45° – θ) = sin {90° – (45° – θ)} – cos (45° – θ) = cos (45° – θ) – cos (45° – θ) = 0",
"name": "",
"is_accepted": false
}
] |
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d08f22b3a6e9f0195a8df502cffe2463 | a shell is fired from a cannon, it explodes in mid air, its total (a) momentum increases (b) momentum decreases (c) k.e. increases (d) k.e. decreases | askiitians.com | 2021.21 | [
{
"text": "(c) when shell explodes in mid air its chemical energy is partly converted into mechanical energy, hence k.e. increases",
"name": "",
"is_accepted": false
}
] |
|
bb9f47d78e646aac2341532bd19c3e9a | whar chemical process is used for obtainig a metal from its oxide | askiitians.com | 2021.31 | [
{
"text": "a metal can be extracted from its oxide by the process of reduction. reduction of metal oxides usually involves heating it with some other substance acting as a reducing agent (c or co or even other metal) m x o y + yc ---------> xm + yco (approve if the solution proves to be of any help)",
"name": "",
"is_accepted": false
}
] |
|
8dcffe9fbd374ea204c01e6395dba1e7 | please answer the following question 75% of a radio active element gets decayed in 24 hours.what is its half life? | askiitians.com | 2021.25 | [
{
"text": "12 hrs. 75% decay means 2 h.l.p. hence",
"name": "",
"is_accepted": false
},
{
"text": "its take 12hrs to decay 50%",
"name": "",
"is_accepted": false
}
] |
|
b98f56bcc08def3f5d2b9a2a2bfa6a3a | what would be the pattern of examination for iseet? | askiitians.com | 2021.21 | [
{
"text": "iseet main examination will constitute an objective test which will be of three hours of duration, which will be held at 10am on the date of examination. the main exam will have a test for comprehension, critical and logical reasoning. advance examination: iseet advance examination will test problem-solving ability in basic science subjects, will be held at 5pm on the date of the examination and the duration of the test will be 3 hours.the two tests together will indicate a candidate’s scholastic level and aptitude for science and engineering. the combined weightage for advance and main exam will not be more than 60% and while school performance in 12th board should be minimum 40% and can even go upto 100%. these three scores should available to a student for seeking admission in a science or engineering course in the country. the specific weightage to be given to each of these three components will bedecided by the academic institution(s)/ state government (s).",
"name": "",
"is_accepted": false
}
] |
|
b10636e8c8f13fb7be6eb49f8cf1f238 | figure shows a 2kg block slides along a frictionless track of length 5m along the track and a net vertical distance of 3m how much work is done on the block by the gravitational force during the slide? | askiitians.com | 2021.43 | [
{
"text": "dear student there is no image posted. please check and repost the question with an image. i will be happy to help you. regards arun (askiitians for exlert)",
"name": "",
"is_accepted": false
}
] |
|
5d45d58bb30dd2905b7967a3171b8da9 | what is long range order?plz explain in detail with example | askiitians.com | 2021.39 | [
{
"text": "dear maharishi long range order are exclusively for crysttaline substances , it means substances have a regular pattern of arrengement which repeats itself over the entire crystal periodically . example – atomic position in a crystal . hope it clears regards",
"name": "",
"is_accepted": false
}
] |
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f1cd187bbe05e369f9b691fdf9492b13 | if limx!0(cos x + a sin bx)1=x = e2. prove that ab = 2 | askiitians.com | 2021.31 | [
{
"text": "your expression are not clear you can upload the pic of the question which can be understood easily please rewrite the question again thanks & regards sudhir, askiitians faculty qualification. iit delhi",
"name": "",
"is_accepted": false
}
] |
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55d9a30525897c6e5a62ef468b265c0e | hi. my jee main score is 82 and crl rank is 2,44,981. so is there any way to get in nit? | askiitians.com | 2021.25 | [
{
"text": "no chance. nit is only secured when one gets approx 170-180. better for you to take one year drop and tighten your belt for next year. all the best",
"name": "",
"is_accepted": false
},
{
"text": "@ rushil no , there is no chance through if u have scored above than 1 lakh crl rank in nit , |u will get nit by below ranks of 1 lakh , for that minimum u need to cross 200 for comp sci branch in lower nit . in this score u might gate the state govt colleges , otherwise go for 1 year longterm coaching and strong your weak area . u can even try out , askiitian self study package , they will for sure help you out from this . all the best ..",
"name": "",
"is_accepted": false
},
{
"text": "no dear there are only 2 lakhs seats in nit so no chance of yours for getting into iit. actually this time the seats are only 150000 but next time thay will be 2 lakhs. so if you want to get into nit or iit then surely you have to opt for drop this year and appear in the exam next year thanks",
"name": "",
"is_accepted": false
}
] |
|
4e9e8d2ecf42a3368c5aa30ff92aaea0 | hey i am expecting around 4000 rank in iitjee n around 1000 in aieee.which all iits n other colleges can i get with above mentioned ranks..? | askiitians.com | 2021.31 | [
{
"text": "to predict your rank you could use the information on askiitians website. if you want any further information like which branch in which iit you may have a chance. you could contact me by calling up at askiitians. it would be soon uploaded in askioiitians site too.",
"name": "",
"is_accepted": false
}
] |
|
e79d0f5551af78a9ccc02e46b44714c0 | how can i feel comfident in integration... | askiitians.com | 2021.31 | [
{
"text": "first practice problems of integration from ncert book of maths, and then solve previous year jee problems of integeration, you will feel confident within one week.",
"name": "",
"is_accepted": false
},
{
"text": "important topics for jee only???",
"name": "",
"is_accepted": false
}
] |
|
dc0de7eb4b03033683a3fde68f8d5250 | phenol formula | askiitians.com | 2021.31 | [
{
"text": "the formula of phenol is c 6 h 5 oh. thanks & regards kamlesh kumar askiitians faculty",
"name": "",
"is_accepted": false
},
{
"text": "phenol also known as carbolic acid.it is a white crystalline solide.the structural formula of phenol is c6h5oh. this formula is used to represent the six atoms of carbon, the six atoms of hydrogen, and the single atom of oxygen that is found in the organic compound called phenol. phenol is most often used to create items like plastics but can also be found in many types of drugs including aspirin. phenol is used in some medications that are analgesics or numbing agents and can be found in many sore throat sprays.",
"name": "",
"is_accepted": false
}
] |
|
a713e5848dafd24f6238ad093c9514ad | a person moving with speed 7 m/s in horizontal direction observes that rain is falling at an angle 37 degree with the vertical if he increase his speed upto 25 m/s then he observes that rain is falling again 17 degree with the horizontal then. find actual velocity of rain and its direction | askiitians.com | 2021.43 | [
{
"text": "dear student, please see the solution in the pictures below.",
"name": "",
"is_accepted": false
}
] |
|
00956da3b897db590f20a05da2f729e6 | please xplain the difference between diplospory apomixis and apospory. | askiitians.com | 2021.31 | [
{
"text": "dear ayushi, apomixis: it means the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction:meiosis and fertilization. with out the need for male fertilization there is no apomixis. apospory: it means production of gametophytes directly from diploid cells of the sporophytes with out spore formation.",
"name": "",
"is_accepted": false
}
] |
|
d53dc6033703400870500f59b95f9c03 | if x = a cos 0 and y = b sin 0, then b2x2 + a2y2 = (a) ab (b) b² + a² (c) a²b² (d) a4b4 | askiitians.com | 2021.43 | [
{
"text": "answer: c",
"name": "",
"is_accepted": false
}
] |
|
7b61140c9fc5dfebcf2998e7fb6e4f37 | i am having my counselling at iit bombay on 16 th june. but the aptitude test fot b arch courses at iit is on 15 th ? how do i register for the aptitude test? do i have to contact the iit bombay to give my preference for b arch before counselling . can u enlighten me please | askiitians.com | 2021.43 | [
{
"text": "hello student please wait for the notification to come thanks all the best for your future \\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_",
"name": "",
"is_accepted": false
}
] |
|
140a5f08c5dd669a7c70b721e64c668b | a ray of light travelling in cur enters obliquely into water. does the light ray bend towards the normal or away form the normal? why? | askiitians.com | 2021.31 | [
{
"text": "dear student the light bends towards the normal on entry into water because water is optically denser than air. thanks",
"name": "",
"is_accepted": false
}
] |
|
b1280afc59255d83b52855cab6abe443 | the complex numbers z1 z2 and z3 satisfying z1- z3/z2 -z3= 1-i(root 3)/2 are vertices of a triangle which is of arwa 0 eqiulateral right angled isosceles obtuse angle isosceles | askiitians.com | 2021.25 | [
{
"text": "(z1-z2)/(z2-z3)= cos(-60)+sin(-60)=e -i60 taking mode on both sides absolute value of(z1-z2/z2-z3)=1 therefore |z1-z2|=|z2-z3| also angle between z1-z2 & z2-z3 is 60 so given triangle is equilateral triangle. thanks & regards sunil raikwar askiitians faculty",
"name": "",
"is_accepted": false
}
] |
|
e07985840295b80f6828044f1d4f5751 | i got 102 in iit jee. which branch i should opt for best placements. | askiitians.com | 2021.21 | [
{
"text": "hi varshul , congrats for a good rank in jee. you will get all the options to choose from . as about best branches for placements . mech . ,ece. are safer options you will always have good paying jobs in them . part from that cs has a good scope to . thus i wud suggest you to choose a branch of your choice from the above as what is more important is to like the subject that you study and also like the job that you eventually wud be doing thus go for a branch of your interest. feel free to post as many as doubts you have we wud be happy to help. all the best !!! anshul",
"name": "",
"is_accepted": false
}
] |
|
d4ffb085173e94cdc9f6aa0c788577c1 | can u give a better explanation of this question plz | askiitians.com | 2021.43 | [
{
"text": "dear vaibhav ther is no question attached. please check and repost this. you can also attach an image. i will be happy to help you.",
"name": "",
"is_accepted": false
}
] |
|
0deda6d8b6d6b9aaf7b61f498ed7d89e | vinegar is a solution of [ncert exemplar problems] (a) 50 % – 60 % acetic acid in alcohol (b) 5 % – 8 % acetic acid in alcohol (c) 5 % – 8 % acetic acid in water (d) 50 % – 60 % acetic acid in water | askiitians.com | 2021.39 | [
{
"text": "answer: c",
"name": "",
"is_accepted": false
}
] |
|
f31eec0e77ae270cd33a9a8ea9149fcb | if the pressure of atmospheric air at sea level is 480 mm of hg and oxygen forms 21% of inhaled air the p o 2 in alveolar air will be ? 21 % of inhaled air the p o in alveolar air will be ? | askiitians.com | 2021.39 | [
{
"text": "the po 2 in alveolar air is 104 mm hg. this is a fact.",
"name": "",
"is_accepted": false
}
] |
|
e34d399127eb97cf7fa43b47f2b588a0 | sir, please guide me, which branch is better electrical & electronics engg.(eee),electonics & commn (ece) at dtu,delhi or ece at nsit, or which branch is better eee or ece other wise ? i understand these branches are also available in nit,delhi also. | askiitians.com | 2021.21 | [
{
"text": "the best college in the above list is nsit as compared to dtu and the scope for on campus placement for bothh the brannches is kind of similar. doing b.tech in any of these is good and any specific course in majors can be done afterwards. thanks",
"name": "",
"is_accepted": false
}
] |
|
9e83ee1b44070510022b58ce8e88c1dd | what is the solution for ∫√(1 + tanx) dx? please give me answer | askiitians.com | 2021.43 | [
{
"text": "put y^2= 1 + tanx 2ydy= sec^2xdx=(1 + tan^2x)dx=(1 + (y^2 – 1)^2 )dx so that i= ∫2y^2dy/( 1 + (y^2 – 1 )^2) = ∫2y^2dy/(y^4 – 2y^2+2 ) now this last integral is superbly tricky. write 2y^2/(y^4 – 2y^2+2) as 2/(y^2 – 2+2/y^2) = (1 – √ 2/y^2)/(y^2 – 2+2/y^2) + (1+ √ 2/y^2)/(y^2 – 2+2/y^2) this way we have two integrals. in the first integral, write the denominator y^2 – 2+2/y^2 as (y+ √ 2/y)^2 – 2(1+ √ 2) and then substitute y+ √ 2/y= z and the integral will turn into a standard partial fraction form. in the second interal, write the denominator y^2 – 2+2/y^2 as (y – √ 2/y)^2 – 2+2 √ 2 and then substitute y – √ 2/y= t and the integral will turn into a standard partial fraction form.",
"name": "",
"is_accepted": false
}
] |
|
98db414fdbaff164c16fb855a9773b46 | what is pollination ?what happend when pollination occur ? | askiitians.com | 2021.43 | [
{
"text": "pollination is the process of transferring the poleen grains from the male anther to the female anther of the plant .it is because to produce off springs for next generation.",
"name": "",
"is_accepted": false
}
] |
|
faad2640d23530a04495316969482939 | what is the approximate age of the earth?explain briefly? | askiitians.com | 2021.25 | [
{
"text": "the approximate age of earth is around 4.5 billion years. this number of years has been constrained by earth scientists by using several advanced dating techniques to find the age of the oldest rocks, present in the earth crust. besides, geochemical and isotopic data from meteors that have hit earth in recent times, gives an idea of such an age of the planet.",
"name": "",
"is_accepted": false
}
] |
|
6da593b3f4684666a9818256855353fa | i am presently in 12th and want to prepare for iit 2013. i am planning to take drop. but i heard that there will not be iit 2013. is it true if yes then tell what to do now. how to prepare for upcoming exams whatever will be in 2013 | askiitians.com | 2021.25 | [
{
"text": "hi ankit, till now its not clear its only in news that pattern is going to change, but these talks are coming from last 3 years and nothing is changing, so just chill for now and prepare according to current opattern only regards",
"name": "",
"is_accepted": false
}
] |
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