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9 | 939-942 | 44 What is the
range of the angles of the incident rays with the axis of the pipe
for which total reflections inside the pipe take place, as shown
in the figure FIGURE 9 28
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(b) What is the answer if there is no outer covering of the pipe |
9 | 940-943 | What is the
range of the angles of the incident rays with the axis of the pipe
for which total reflections inside the pipe take place, as shown
in the figure FIGURE 9 28
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(b) What is the answer if there is no outer covering of the pipe 9 |
9 | 941-944 | FIGURE 9 28
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(b) What is the answer if there is no outer covering of the pipe 9 18
The image of a small electric bulb fixed on the wall of a room is to be
obtained on the opposite wall 3m away by means of a large convex
lens |
9 | 942-945 | 28
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(b) What is the answer if there is no outer covering of the pipe 9 18
The image of a small electric bulb fixed on the wall of a room is to be
obtained on the opposite wall 3m away by means of a large convex
lens What is the maximum possible focal length of the lens required
for the purpose |
9 | 943-946 | 9 18
The image of a small electric bulb fixed on the wall of a room is to be
obtained on the opposite wall 3m away by means of a large convex
lens What is the maximum possible focal length of the lens required
for the purpose 9 |
9 | 944-947 | 18
The image of a small electric bulb fixed on the wall of a room is to be
obtained on the opposite wall 3m away by means of a large convex
lens What is the maximum possible focal length of the lens required
for the purpose 9 19
A screen is placed 90cm from an object |
9 | 945-948 | What is the maximum possible focal length of the lens required
for the purpose 9 19
A screen is placed 90cm from an object The image of the object on
the screen is formed by a convex lens at two different locations
separated by 20cm |
9 | 946-949 | 9 19
A screen is placed 90cm from an object The image of the object on
the screen is formed by a convex lens at two different locations
separated by 20cm Determine the focal length of the lens |
9 | 947-950 | 19
A screen is placed 90cm from an object The image of the object on
the screen is formed by a convex lens at two different locations
separated by 20cm Determine the focal length of the lens 9 |
9 | 948-951 | The image of the object on
the screen is formed by a convex lens at two different locations
separated by 20cm Determine the focal length of the lens 9 20
(a) Determine the ‘effective focal length’ of the combination of
the two lenses in Exercise 9 |
9 | 949-952 | Determine the focal length of the lens 9 20
(a) Determine the ‘effective focal length’ of the combination of
the two lenses in Exercise 9 10, if they are placed 8 |
9 | 950-953 | 9 20
(a) Determine the ‘effective focal length’ of the combination of
the two lenses in Exercise 9 10, if they are placed 8 0cm apart
with their principal axes coincident |
9 | 951-954 | 20
(a) Determine the ‘effective focal length’ of the combination of
the two lenses in Exercise 9 10, if they are placed 8 0cm apart
with their principal axes coincident Does the answer depend
on which side of the combination a beam of parallel light is
incident |
9 | 952-955 | 10, if they are placed 8 0cm apart
with their principal axes coincident Does the answer depend
on which side of the combination a beam of parallel light is
incident Is the notion of effective focal length of this system
useful at all |
9 | 953-956 | 0cm apart
with their principal axes coincident Does the answer depend
on which side of the combination a beam of parallel light is
incident Is the notion of effective focal length of this system
useful at all (b) An object 1 |
9 | 954-957 | Does the answer depend
on which side of the combination a beam of parallel light is
incident Is the notion of effective focal length of this system
useful at all (b) An object 1 5 cm in size is placed on the side of the convex lens
in the arrangement (a) above |
9 | 955-958 | Is the notion of effective focal length of this system
useful at all (b) An object 1 5 cm in size is placed on the side of the convex lens
in the arrangement (a) above The distance between the object
and the convex lens is 40 cm |
9 | 956-959 | (b) An object 1 5 cm in size is placed on the side of the convex lens
in the arrangement (a) above The distance between the object
and the convex lens is 40 cm Determine the magnification
produced by the two-lens system, and the size of the image |
9 | 957-960 | 5 cm in size is placed on the side of the convex lens
in the arrangement (a) above The distance between the object
and the convex lens is 40 cm Determine the magnification
produced by the two-lens system, and the size of the image 9 |
9 | 958-961 | The distance between the object
and the convex lens is 40 cm Determine the magnification
produced by the two-lens system, and the size of the image 9 21
At what angle should a ray of light be incident on the face of a prism
of refracting angle 60° so that it just suffers total internal reflection
at the other face |
9 | 959-962 | Determine the magnification
produced by the two-lens system, and the size of the image 9 21
At what angle should a ray of light be incident on the face of a prism
of refracting angle 60° so that it just suffers total internal reflection
at the other face The refractive index of the material of the prism is
1 |
9 | 960-963 | 9 21
At what angle should a ray of light be incident on the face of a prism
of refracting angle 60° so that it just suffers total internal reflection
at the other face The refractive index of the material of the prism is
1 524 |
9 | 961-964 | 21
At what angle should a ray of light be incident on the face of a prism
of refracting angle 60° so that it just suffers total internal reflection
at the other face The refractive index of the material of the prism is
1 524 9 |
9 | 962-965 | The refractive index of the material of the prism is
1 524 9 22
A card sheet divided into squares each of size 1 mm2 is being viewed
at a distance of 9 cm through a magnifying glass (a converging lens
of focal length 9 cm) held close to the eye |
9 | 963-966 | 524 9 22
A card sheet divided into squares each of size 1 mm2 is being viewed
at a distance of 9 cm through a magnifying glass (a converging lens
of focal length 9 cm) held close to the eye (a) What is the magnification produced by the lens |
9 | 964-967 | 9 22
A card sheet divided into squares each of size 1 mm2 is being viewed
at a distance of 9 cm through a magnifying glass (a converging lens
of focal length 9 cm) held close to the eye (a) What is the magnification produced by the lens How much is
the area of each square in the virtual image |
9 | 965-968 | 22
A card sheet divided into squares each of size 1 mm2 is being viewed
at a distance of 9 cm through a magnifying glass (a converging lens
of focal length 9 cm) held close to the eye (a) What is the magnification produced by the lens How much is
the area of each square in the virtual image (b) What is the angular magnification (magnifying power) of the
lens |
9 | 966-969 | (a) What is the magnification produced by the lens How much is
the area of each square in the virtual image (b) What is the angular magnification (magnifying power) of the
lens (c) Is the magnification in (a) equal to the magnifying power in (b) |
9 | 967-970 | How much is
the area of each square in the virtual image (b) What is the angular magnification (magnifying power) of the
lens (c) Is the magnification in (a) equal to the magnifying power in (b) Explain |
9 | 968-971 | (b) What is the angular magnification (magnifying power) of the
lens (c) Is the magnification in (a) equal to the magnifying power in (b) Explain 9 |
9 | 969-972 | (c) Is the magnification in (a) equal to the magnifying power in (b) Explain 9 23
(a) At what distance should the lens be held from the card sheet in
Exercise 9 |
9 | 970-973 | Explain 9 23
(a) At what distance should the lens be held from the card sheet in
Exercise 9 22 in order to view the squares distinctly with the
maximum possible magnifying power |
9 | 971-974 | 9 23
(a) At what distance should the lens be held from the card sheet in
Exercise 9 22 in order to view the squares distinctly with the
maximum possible magnifying power (b) What is the magnification in this case |
9 | 972-975 | 23
(a) At what distance should the lens be held from the card sheet in
Exercise 9 22 in order to view the squares distinctly with the
maximum possible magnifying power (b) What is the magnification in this case (c) Is the magnification equal to the magnifying power in this case |
9 | 973-976 | 22 in order to view the squares distinctly with the
maximum possible magnifying power (b) What is the magnification in this case (c) Is the magnification equal to the magnifying power in this case Explain |
9 | 974-977 | (b) What is the magnification in this case (c) Is the magnification equal to the magnifying power in this case Explain 9 |
9 | 975-978 | (c) Is the magnification equal to the magnifying power in this case Explain 9 24
What should be the distance between the object in Exercise 9 |
9 | 976-979 | Explain 9 24
What should be the distance between the object in Exercise 9 23
and the magnifying glass if the virtual image of each square in
the figure is to have an area of 6 |
9 | 977-980 | 9 24
What should be the distance between the object in Exercise 9 23
and the magnifying glass if the virtual image of each square in
the figure is to have an area of 6 25 mm2 |
9 | 978-981 | 24
What should be the distance between the object in Exercise 9 23
and the magnifying glass if the virtual image of each square in
the figure is to have an area of 6 25 mm2 Would you be able to
see the squares distinctly with your eyes very close to the
magnifier |
9 | 979-982 | 23
and the magnifying glass if the virtual image of each square in
the figure is to have an area of 6 25 mm2 Would you be able to
see the squares distinctly with your eyes very close to the
magnifier [Note: Exercises 9 |
9 | 980-983 | 25 mm2 Would you be able to
see the squares distinctly with your eyes very close to the
magnifier [Note: Exercises 9 22 to 9 |
9 | 981-984 | Would you be able to
see the squares distinctly with your eyes very close to the
magnifier [Note: Exercises 9 22 to 9 24 will help you clearly understand the
difference between magnification in absolute size and the angular
magnification (or magnifying power) of an instrument |
9 | 982-985 | [Note: Exercises 9 22 to 9 24 will help you clearly understand the
difference between magnification in absolute size and the angular
magnification (or magnifying power) of an instrument ]
Rationalised 2023-24
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252
9 |
9 | 983-986 | 22 to 9 24 will help you clearly understand the
difference between magnification in absolute size and the angular
magnification (or magnifying power) of an instrument ]
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252
9 25
Answer the following questions:
(a) The angle subtended at the eye by an object is equal to the
angle subtended at the eye by the virtual image produced by a
magnifying glass |
9 | 984-987 | 24 will help you clearly understand the
difference between magnification in absolute size and the angular
magnification (or magnifying power) of an instrument ]
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252
9 25
Answer the following questions:
(a) The angle subtended at the eye by an object is equal to the
angle subtended at the eye by the virtual image produced by a
magnifying glass In what sense then does a magnifying glass
provide angular magnification |
9 | 985-988 | ]
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252
9 25
Answer the following questions:
(a) The angle subtended at the eye by an object is equal to the
angle subtended at the eye by the virtual image produced by a
magnifying glass In what sense then does a magnifying glass
provide angular magnification (b) In viewing through a magnifying glass, one usually positions
one’s eyes very close to the lens |
9 | 986-989 | 25
Answer the following questions:
(a) The angle subtended at the eye by an object is equal to the
angle subtended at the eye by the virtual image produced by a
magnifying glass In what sense then does a magnifying glass
provide angular magnification (b) In viewing through a magnifying glass, one usually positions
one’s eyes very close to the lens Does angular magnification
change if the eye is moved back |
9 | 987-990 | In what sense then does a magnifying glass
provide angular magnification (b) In viewing through a magnifying glass, one usually positions
one’s eyes very close to the lens Does angular magnification
change if the eye is moved back (c) Magnifying power of a simple microscope is inversely proportional
to the focal length of the lens |
9 | 988-991 | (b) In viewing through a magnifying glass, one usually positions
one’s eyes very close to the lens Does angular magnification
change if the eye is moved back (c) Magnifying power of a simple microscope is inversely proportional
to the focal length of the lens What then stops us from using a
convex lens of smaller and smaller focal length and achieving
greater and greater magnifying power |
9 | 989-992 | Does angular magnification
change if the eye is moved back (c) Magnifying power of a simple microscope is inversely proportional
to the focal length of the lens What then stops us from using a
convex lens of smaller and smaller focal length and achieving
greater and greater magnifying power (d) Why must both the objective and the eyepiece of a compound
microscope have short focal lengths |
9 | 990-993 | (c) Magnifying power of a simple microscope is inversely proportional
to the focal length of the lens What then stops us from using a
convex lens of smaller and smaller focal length and achieving
greater and greater magnifying power (d) Why must both the objective and the eyepiece of a compound
microscope have short focal lengths (e) When viewing through a compound microscope, our eyes should
be positioned not on the eyepiece but a short distance away
from it for best viewing |
9 | 991-994 | What then stops us from using a
convex lens of smaller and smaller focal length and achieving
greater and greater magnifying power (d) Why must both the objective and the eyepiece of a compound
microscope have short focal lengths (e) When viewing through a compound microscope, our eyes should
be positioned not on the eyepiece but a short distance away
from it for best viewing Why |
9 | 992-995 | (d) Why must both the objective and the eyepiece of a compound
microscope have short focal lengths (e) When viewing through a compound microscope, our eyes should
be positioned not on the eyepiece but a short distance away
from it for best viewing Why How much should be that short
distance between the eye and eyepiece |
9 | 993-996 | (e) When viewing through a compound microscope, our eyes should
be positioned not on the eyepiece but a short distance away
from it for best viewing Why How much should be that short
distance between the eye and eyepiece 9 |
9 | 994-997 | Why How much should be that short
distance between the eye and eyepiece 9 26
An angular magnification (magnifying power) of 30X is desired using
an objective of focal length 1 |
9 | 995-998 | How much should be that short
distance between the eye and eyepiece 9 26
An angular magnification (magnifying power) of 30X is desired using
an objective of focal length 1 25cm and an eyepiece of focal length
5cm |
9 | 996-999 | 9 26
An angular magnification (magnifying power) of 30X is desired using
an objective of focal length 1 25cm and an eyepiece of focal length
5cm How will you set up the compound microscope |
9 | 997-1000 | 26
An angular magnification (magnifying power) of 30X is desired using
an objective of focal length 1 25cm and an eyepiece of focal length
5cm How will you set up the compound microscope 9 |
9 | 998-1001 | 25cm and an eyepiece of focal length
5cm How will you set up the compound microscope 9 27
A small telescope has an objective lens of focal length 140cm and
an eyepiece of focal length 5 |
9 | 999-1002 | How will you set up the compound microscope 9 27
A small telescope has an objective lens of focal length 140cm and
an eyepiece of focal length 5 0cm |
9 | 1000-1003 | 9 27
A small telescope has an objective lens of focal length 140cm and
an eyepiece of focal length 5 0cm What is the magnifying power of
the telescope for viewing distant objects when
(a) the telescope is in normal adjustment (i |
9 | 1001-1004 | 27
A small telescope has an objective lens of focal length 140cm and
an eyepiece of focal length 5 0cm What is the magnifying power of
the telescope for viewing distant objects when
(a) the telescope is in normal adjustment (i e |
9 | 1002-1005 | 0cm What is the magnifying power of
the telescope for viewing distant objects when
(a) the telescope is in normal adjustment (i e , when the final image
is at infinity) |
9 | 1003-1006 | What is the magnifying power of
the telescope for viewing distant objects when
(a) the telescope is in normal adjustment (i e , when the final image
is at infinity) (b) the final image is formed at the least distance of distinct vision
(25cm) |
9 | 1004-1007 | e , when the final image
is at infinity) (b) the final image is formed at the least distance of distinct vision
(25cm) 9 |
9 | 1005-1008 | , when the final image
is at infinity) (b) the final image is formed at the least distance of distinct vision
(25cm) 9 28
(a) For the telescope described in Exercise 9 |
9 | 1006-1009 | (b) the final image is formed at the least distance of distinct vision
(25cm) 9 28
(a) For the telescope described in Exercise 9 27 (a), what is the
separation between the objective lens and the eyepiece |
9 | 1007-1010 | 9 28
(a) For the telescope described in Exercise 9 27 (a), what is the
separation between the objective lens and the eyepiece (b) If this telescope is used to view a 100 m tall tower 3 km away,
what is the height of the image of the tower formed by the objective
lens |
9 | 1008-1011 | 28
(a) For the telescope described in Exercise 9 27 (a), what is the
separation between the objective lens and the eyepiece (b) If this telescope is used to view a 100 m tall tower 3 km away,
what is the height of the image of the tower formed by the objective
lens (c) What is the height of the final image of the tower if it is formed at
25cm |
9 | 1009-1012 | 27 (a), what is the
separation between the objective lens and the eyepiece (b) If this telescope is used to view a 100 m tall tower 3 km away,
what is the height of the image of the tower formed by the objective
lens (c) What is the height of the final image of the tower if it is formed at
25cm 9 |
9 | 1010-1013 | (b) If this telescope is used to view a 100 m tall tower 3 km away,
what is the height of the image of the tower formed by the objective
lens (c) What is the height of the final image of the tower if it is formed at
25cm 9 29
A Cassegrain telescope uses two mirrors as shown in Fig |
9 | 1011-1014 | (c) What is the height of the final image of the tower if it is formed at
25cm 9 29
A Cassegrain telescope uses two mirrors as shown in Fig 9 |
9 | 1012-1015 | 9 29
A Cassegrain telescope uses two mirrors as shown in Fig 9 26 |
9 | 1013-1016 | 29
A Cassegrain telescope uses two mirrors as shown in Fig 9 26 Such
a telescope is built with the mirrors 20mm apart |
9 | 1014-1017 | 9 26 Such
a telescope is built with the mirrors 20mm apart If the radius of
curvature of the large mirror is 220mm and the small mirror is
140mm, where will the final image of an object at infinity be |
9 | 1015-1018 | 26 Such
a telescope is built with the mirrors 20mm apart If the radius of
curvature of the large mirror is 220mm and the small mirror is
140mm, where will the final image of an object at infinity be 9 |
9 | 1016-1019 | Such
a telescope is built with the mirrors 20mm apart If the radius of
curvature of the large mirror is 220mm and the small mirror is
140mm, where will the final image of an object at infinity be 9 30
Light incident normally on a plane mirror attached to a galvanometer
coil retraces backwards as shown in Fig |
9 | 1017-1020 | If the radius of
curvature of the large mirror is 220mm and the small mirror is
140mm, where will the final image of an object at infinity be 9 30
Light incident normally on a plane mirror attached to a galvanometer
coil retraces backwards as shown in Fig 9 |
9 | 1018-1021 | 9 30
Light incident normally on a plane mirror attached to a galvanometer
coil retraces backwards as shown in Fig 9 29 |
9 | 1019-1022 | 30
Light incident normally on a plane mirror attached to a galvanometer
coil retraces backwards as shown in Fig 9 29 A current in the coil
produces a deflection of 3 |
9 | 1020-1023 | 9 29 A current in the coil
produces a deflection of 3 5o of the mirror |
9 | 1021-1024 | 29 A current in the coil
produces a deflection of 3 5o of the mirror What is the displacement
of the reflected spot of light on a screen placed 1 |
9 | 1022-1025 | A current in the coil
produces a deflection of 3 5o of the mirror What is the displacement
of the reflected spot of light on a screen placed 1 5 m away |
9 | 1023-1026 | 5o of the mirror What is the displacement
of the reflected spot of light on a screen placed 1 5 m away Rationalised 2023-24
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253
FIGURE 9 |
9 | 1024-1027 | What is the displacement
of the reflected spot of light on a screen placed 1 5 m away Rationalised 2023-24
Ray Optics and
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253
FIGURE 9 29
9 |
9 | 1025-1028 | 5 m away Rationalised 2023-24
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253
FIGURE 9 29
9 31
Figure 9 |
9 | 1026-1029 | Rationalised 2023-24
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253
FIGURE 9 29
9 31
Figure 9 30 shows an equiconvex lens (of refractive index 1 |
9 | 1027-1030 | 29
9 31
Figure 9 30 shows an equiconvex lens (of refractive index 1 50) in
contact with a liquid layer on top of a plane mirror |
9 | 1028-1031 | 31
Figure 9 30 shows an equiconvex lens (of refractive index 1 50) in
contact with a liquid layer on top of a plane mirror A small needle
with its tip on the principal axis is moved along the axis until its
inverted image is found at the position of the needle |
9 | 1029-1032 | 30 shows an equiconvex lens (of refractive index 1 50) in
contact with a liquid layer on top of a plane mirror A small needle
with its tip on the principal axis is moved along the axis until its
inverted image is found at the position of the needle The distance of
the needle from the lens is measured to be 45 |
9 | 1030-1033 | 50) in
contact with a liquid layer on top of a plane mirror A small needle
with its tip on the principal axis is moved along the axis until its
inverted image is found at the position of the needle The distance of
the needle from the lens is measured to be 45 0cm |
9 | 1031-1034 | A small needle
with its tip on the principal axis is moved along the axis until its
inverted image is found at the position of the needle The distance of
the needle from the lens is measured to be 45 0cm The liquid is
removed and the experiment is repeated |
9 | 1032-1035 | The distance of
the needle from the lens is measured to be 45 0cm The liquid is
removed and the experiment is repeated The new distance is
measured to be 30 |
9 | 1033-1036 | 0cm The liquid is
removed and the experiment is repeated The new distance is
measured to be 30 0cm |
9 | 1034-1037 | The liquid is
removed and the experiment is repeated The new distance is
measured to be 30 0cm What is the refractive index of the liquid |
9 | 1035-1038 | The new distance is
measured to be 30 0cm What is the refractive index of the liquid FIGURE 9 |
9 | 1036-1039 | 0cm What is the refractive index of the liquid FIGURE 9 30
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Notes
Rationalised 2023-24
255
Wave Optics
Chapter Ten
WAVE OPTICS
10 |
9 | 1037-1040 | What is the refractive index of the liquid FIGURE 9 30
Rationalised 2023-24
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254
Notes
Rationalised 2023-24
255
Wave Optics
Chapter Ten
WAVE OPTICS
10 1 INTRODUCTION
In 1637 Descartes gave the corpuscular model of light and derived Snell’s
law |
9 | 1038-1041 | FIGURE 9 30
Rationalised 2023-24
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254
Notes
Rationalised 2023-24
255
Wave Optics
Chapter Ten
WAVE OPTICS
10 1 INTRODUCTION
In 1637 Descartes gave the corpuscular model of light and derived Snell’s
law It explained the laws of reflection and refraction of light at an interface |
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