Saraswati Vidhya Mandir, Gandhinagar

Chapters : 1,2 Std 12 : Physics Date : 26/08/25

Total Marks : 96 Unit Test Time : 03 Hour
//X Section A
• Choose correct answer from the given options. [Each carries 1 Mark] [96]
1. Radius of curvature of a concave mirror is 20 cm, then its focal length is ...... cm.
(A) – 20 cm (B) + 20 cm (C) – 10 cm (D) + 10 cm
2. An object is placed at a distance of 25 cm on the axis of a concave mirror, having focal length 20
cm. Find the lateral magnification of an image.
(A) – 4 (B) 4 (C) 2 (D) – 2
3. An object is placed at a distance 40 cm in front of concave mirror. Focal length of mirror is 20 cm,
so what will be type of image ?
(A) Virtual and inverted (B) Real and erect
(C) Real, inverted and of the same size of object (D) Real, inverted and smaller.
4. A convex mirror having focal length 20 cm is used as side glass in car. Driver will find image of car
coming behind 6 m away at .....
(A) 15.4 cm (B) 17.4 cm (C) 19.4 cm (D) 21.4 cm
5. Object is placed 60 cm away from convex mirror. If magnification is 0.5, image distance = ......
(A) –30 (B) 15 (C) 30 (D) –15
6. If f is focal length and v is image distance for spherical mirror, then lateral magnification
m = ......
f f f +v f -v
(A) (B) (C) (D)
f +v f -v f f
7. If f is focal length and u is object distance for spherical mirror, then lateral magnification m = ......
f f f f -u
(A) (B) (C) (D)
u- f u+ f f -u f
8. Refraction index of medium-2 with respect to medium-1 is ...... .
n1 n2 n2 n1
(A) n12 = (B) n21 = n (C) n12 = n (D) n21 = n
n2 1 1 2
9. Which of the following doesn’t represent the refractive index of medium-2 with respect to medium-1 ?
sin q1 v1 v2 n2
(A) n21 = sin (B) n21 = v (C) n21 = (D) n21 =
q2 2 v1 n1
10. n21 ´ n12 = ......
(A) 1 (B) – 1 (C) ฀ (D) 0
11. Which of the following relation is correct for relative refractive index ?
1
n 1
(A) 1n2 = 1n2 ´ 3n2 (B) 1n3 ´ 3n2 = 2n1 (C) 1n3 ´ 3n1 = 0 (D) 2 3 = n2
n3
12. If the speed of light in a medium is 200 ´ 106 m/s, then refractive index of medium is ......
[c = 3 ´ 10 8 m/s]
(A) 1 (B) 1.2 (C) 1.33 (D) 1.5
13. A ray of light incidents from air on the surface of some medium at an angle of incidence 45° and
is refracted through an angle 30°, then the velocity of light in the medium is ...... ms–1.
(A) 1.96 ´ 108 (B) 2.12 ´ 108 (C) 3.18 ´ 108 (D) 3.33 ´ 108
14. When a ray of light travel from one medium to other then the physical quantity which does not
change is ............
(A) velocity (B) wavelength (C) frequency (D) intensity
Wish You - All The Best
 When a ray of light travel from one medium to other then the physical quantity which does not
change is ............
(A) velocity (B) wavelength (C) frequency (D) intensity
15. When light ray travels from denser to rarer medium and if q1 is incidence and q2 is refraction angle,
then ......
(A) q1 > q2 (B) q1 < q2 (C) q1 = q2 (D) q2 > q1 or q1 > q2
16. Refractive index of glass with respect to air is 1.8. So refractive index of air with respect to glass =
..........
(A) 1 (B) 1.8 (C) 0.556 (D) 5.56
17. When a ray of light enters into the medium of refractive index of µ, angle of refraction is half of angle
of incidence so angle of incidence = ......

m æ mö m
(A) 2sin–1 æç ö÷ (B) 2cos–1(m) (C) cos–1 ç ÷ (D) 2cos–1 æç ö÷
è 2ø è 2ø è 2ø
18. The refractive indices of water and glass are 1.2 and 1.5 respectively. What will be the refractive index
of glass with respect to water ?
(A) 1.6 (B) 1.4 (C) 1.0 (D) 1.25
19. Refractive index of diamond is 2. Speed of light in it is ...... cm/s.
(A) 6 ´ 1010 (B) 3.0 ´ 1010 (C) 2 ´ 1010 (D) 1.5 ´ 1010
20. Light ray travels from air to glass and air to water, as shown in figure (i) and (ii) respectively. What is
refraction angle for figure (iii) ?

35° Air
Glass 60° Glass

Air
60° Water 47° Water
45°

(a) (b) (c)

(A) 30° (B) 35° (C) 60° (D) 41°
21. When an object in rarer medium is viewed from denser medium, then that object seems to be ......
(A) shifted up (B) shifted down (C) at the same position (D) none of these
22. A bird views a fish at 3 m depth in water, then Real depth of fish is ......
4
(Refraction index of water is )
3
9 4 3
(A) 4 m (B) m (C) m (D) m
4 9 4
23. An object viewed by a person in water is at 3 m height in air, then real height of object is ......
9 4 3
(A) 4 m (B) m (C) m (D) m
4 9 4
24. When light ray travels from ...... then total internal reflection is possible.
(A) from air to water (B) from air to glass
(C) from water to glass (D) from glass to water
25. Refractive index of cladding of optical fibre is ...... that of core of optical fibre.
(A) greater than (B) less than
(C) same as (D) greater or less than
26. Critical angle of glass-air is 42°, then speed of light in glass is ......
(A) 3 ´ 108 ms-1 (B) 2 ´ 108 ms-1 (C) 1.5 ´ 108 ms-1 (D) 2.5 ´ 108 ms-1
27. Light rays emerge from denser medium (n2), refract from curved surface and then travel through rarer
medium (n1), formula for this is ....
n2 n1 n - n2 n2 n1 n - n1
(A) - + = 1 (B) - + = 2
u v R u v R
n1 n2 n2 - n1 n1 n2 n1 - n2
(C) - + = (D) - + =
u v R u v R
28. Focal length of thin lens ......
(A) decreases with increase in refractive index. (B) increases with increase in refractive index.
Wish You - All The Best
(C) doesn’t change with refractive index. (D) none of these.
 Focal length of thin lens ......
(A) decreases with increase in refractive index. (B) increases with increase in refractive index.
(C) doesn’t change with refractive index. (D) none of these.
29. The radii of curvature of both the sides of a convex lens are 15 cm and if the refractive index of the
material of the lens is 1.5, then focal length of lens in air is ......... cm.
(A) 10 (B) 15 (C) 20 (D) 30
30. The focal length of an equiconvex lens in air is equal to either of its radii of curvature. The refractive
index of the material of the lens is .......... .
4
(A) (B) 1.5 (C) 2.5 (D) 0.8
3
31. A concave or convex lens is given such that radii of curvature are same. If refractive index of glass
is 1.5, then its focal length = ...... where R = radius of curvature.
R 1
(A) R (B) (C) 2R (D) R
2 4
32. Radius of curvature of plano-convex lens is 10 cm. If its focal length is 30 cm, then its refractive
index will be ...... .
(A) 1.1 (B) 1.22 (C) 1.33 (D) 1.66
33. For thin convex lens if magnification is one then object distance and image distances are ......
(A) f, f (B) f, 2f (C) 2f, f (D) 2f, 2f
34. Combination of two convex lenses works always as ......
(A) concave lens (B) convex lens
(C) rectangular glass slab (D) plane mirror
35. One concave and one convex lens have same focal length. If they are kept in contact, combination
behaves as ........
(A) Concave lens (B) Convex lens
(C) Transparent plane plate (D) Curved surface
36. The medium in which the speed of light is half of the speed in air, if light travels from such medium
to air, then for what angle of incidence light will do total internal reflection ?
(A) 15° (B) 30° (C) 45° (D) 60°
37. A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens.
Then its focal length will ......... .
(A) become zero (B) remain unchanged (C) become infinite (D) none of these
38. Two convex lenses 1 and 2 having focal lengths 25 cm and 30 cm are kept in contact such that they
have the same principal axis, focal length of this combination motion is ......
(A) 1.36 (B) 13.6 (C) 31.6 (D) 61.3
39. Convex lens having focal length 25 cm and concave lens having focal length 30 cm are kept in
contact, such that they have the same principal axis. Focal length of this combination is ..........
(A) 1.5 cm (B) 27 cm (C) 150 cm (D) 15 cm
40. ) Power of lens depends on ......
(A) only type of medium of lens.
(B) type of medium of lens and medium in which lens is kept.
(C) only volume of medium in which lens is kept.
(D) none of these.
41. ) The power of combination of two lenses of powers + 1.5 D and – 2.5 D is ...... .
5 3
(A) –1.0 D (B) D (C) D (D) 4.0 D
3 5
42. ) If two lenses of power 2D and 3D are kept in contact with each other, then focal length of the combination
will be ...... cm.
(A) 5 (B) 10 (C) 20 (D) 25
43. ) A compound lens is made by placing a convex lens and a concave lens in contact with each other.
If both the lenses have the same focal length and magnitude 25 cm, the power of the combination
is ...... D. Wish You - All The Best
(A) 50 (B) infinity (C) zero (D) 25
 ) A compound lens is made by placing a convex lens and a concave lens in contact with each other.
If both the lenses have the same focal length and magnitude 25 cm, the power of the combination
is ...... D.
(A) 50 (B) infinity (C) zero (D) 25
44. ) If minimum deviation is Dm for prism then refractive index of material of prism is ......

æ A + Dm ö
sin ç ÷
sin(A + Dm ) è 2 ø 2sin(A + Dm ) sin(A + Dm )
(A) m = (B) m = (C) m = (D) m =
2 sin A sin A sin A
2
sin A 2
45. ) Minimum angle of deviation for prism having angle prism 30° is 30°, so find angle of prism.
(A) 15° (B) 60° (C) 30° (D) 45°
46. ) Refractive index of prism of prism angle 6° is 1.5, then minimum deviation is ...... .
(A) 3° (B) 6° (C) 2° (D) 1°
47. ) A small angled prism of refrative index 1.7 gives a deviation of 4.9°. The angle of prism is .......
(A) 5° (B) 7° (C) 9° (D) 11°
48. Which of the following is used in optical fibres ?
(A) Total internal reflection (B) Scattering
(C) Diffraction (D) Refraction
49. ) The refractive index of glass is 1.53. What is the speed of light in glass ? (Speed of light in vacuum
is 3 ´ 108 m/s–1)
(A) 1.96 ´ 108 m/s (B) 4.59 ´ 108 m/s (C) 5.10 ´ 107 m/s (D) 3 ´ 107 m/s
50. ) A parallel beam of light is incident on a face of the thin prism having angle of prism equal to 6°.
The angle of minimum deviation is measured to be 3° for this thin prism. What is the refractive index
of the material of the thin prism ?
3 2 4 1
(A) (B) (C) (D)
2 3 3 2
51. ) What is the focal length of the combination for convex lens of focal length 20 cm in contact with
a concave lens of focal length 10 cm ?
(A) 10 cm (B) –20 cm (C) 30 cm (D) 200 cm
52. ) Optical phenomenon taking place for mirror and lens respectively are ...... and ...... .
(A) reflection refraction (B) interference, diffraction
(C) reflection, diffraction (D) refraction, interference
53. ) An object is placed at 15 cm in front of a concave mirror of radius of curvature 20 cm. The image
distance would be ...... cm.
(A) – 32 (B) – 28 (C) – 30 (D) – 22
54. ) The refractive index of medium-3 with respect to medium-2 n32 = ......
n31 n12
(A) n13 ´ n21 (B) (C) (D) n31 ´ n12
n12 n31
55. ) Lower half of the concave mirror’s reflecting surface is covered with an opaque (non-reflective)
material. The intensity of the image of an object placed in front of the mirror becomes ........ .
(A) one fourth (B) four times (C) half (D) double
56. ) If the focal length of converging lens is 0.25 m then power of this lens is ...... dioptre.
(A) – 4 (B) + 4 (C) + 2 (D) – 2
57. ) An object is placed at 10 cm in front of a concave mirror of radius curvature 15 cm. Then magnification
of image is ...... .
1 1
(A) 3 (B) - (C) – 3 (D)
3 3
58. ) Dimensional formula for power of lens is ......
(A) [M0 L–1 T0] (B) [M0 L1 T0] (C) [M1 L2 T–3] (D) [M1 L–1 T–1]
59. ) A magician during a show makes a glass lens with n = 1.47 disappear in a trough of liquid. The
refractive index of liquid is ...... .
(A) 1.33 (B) 1.56 Wish You - All The
(C)Best
1.47 (D) 2.42
 ) A magician during a show makes a glass lens with n = 1.47 disappear in a trough of liquid. The
refractive index of liquid is ...... .
(A) 1.33 (B) 1.56 (C) 1.47 (D) 2.42
60. ) In optical fiber, the refractive index of the material of the core is ...... that of the cladding.
(A) higher than (B) less than (C) equal to (D) half
61. A plano-convex lens of radius of curvature 30 cm and refractive index 1.5 is kept in air. Find its focal
length (in cm)
(A) 30 (B) 60 (C) 15 (D) 120
62. The focal length of a lens whose refractive index is same as that of the outside medium is ?
(A) Zero (B) Unity (C) Infinity (D) Can't be found
63. If nij is refractive index of medium i with respect to medium j n21 ´ n32 ´ n43 = .......
1
(A) 3m1 (B) 3m2 (C) (D) 4m2
1 m4
64. Minimum deviation of prism having refractive index µ and small angle of prism A is shown by
.......

æ A + Dm ö
sin ç
è 2 ø÷ é m – 1ù
(A) Dm = (m – 1)A (B) Dm = A[m + 1] (C) Dm = (D) Dm = A ê m + 1 ú
q ë û
sin
2
65. Which of the following phenomenon doesn’t depend on total internal reflection ?
(A) Work of optical fibre.
(B) Real and apparent depth of vessel filled with water.
(C) Mirage formation in summer.
(D) Sparkling of diamond.
66. Which of the following is responsible for glittering of a diamond ?
(A) Interference (B) Diffraction
(C) Total internal reflection (D) Refraction
67. Doctor uses ‘optical fibre’ to observe inner parts of body, which works on ..... principle.
(A) refraction (B) reflection
(C) total internal reflection (D) scattering
68. ) Lens is kept nearer to eye to observe a small thin net of wire at 8 cm distance by magnifying glass
of 10 cm focal length, then magnification = ......
(A) 5 (B) 8 (C) 10 (D) 20
69. ) Focal length of plane mirror is ......
(A) zero (B) infinite
(C) 1 (D) same as of radius of curvature
70.
120) Two thin lenses of focal lengths f1 and f2 are in contact and coaxial. The power of combination
is
f1 f2 f1 f2 f + f2
(A) f - f (B) f1 f2 (C) f + f (D) 1
1 2 1 2 2
71. ) A critical angle for a medium is 60°. Then the refractive index of the medium will be

3 2 1
(A) 3 (B) (C) (D)
2 3 3
72. ) An object is placed at a distance of 40 cm. in front of a concave mirror of focal length 20 cm. The
image produced is .............
(A) real and erect (B) virtual and inverted
(C) real, inverted and smaller in size (D) real, inverted and of same size
73.
125) A real object is placed at a distance f from the pole of a convex mirror, in front of the convex mirror.
If focal length of the mirror is f, then distance of the image from the pole of the mirror is ........
f f
(A) (B) (C) 2f (D) 4f
2 4

Wish You - All The Best

74. ) For a prism of refractive index 1.732, the angle of minimum deviation is equal to the angle of prism.
Then the angle of the prism is ..........
(A) 60o (B) 70o (C) 50o (D) none of these
75. ) A convex lens is immersed in a liquid, whose refractive index is equal to the refractive index of the
material of the lens. Then its focal length will ........
(A) become zero (B) remain unchanged (C) become infinite (D) none of these
76. ) A plane mirror produces a magnification of ............
(A) zero (B) infinite (C) –1 (D) +1
4 3
77. ) Refractive index of water is and that of glass is . What is the refractive index of glass with
3 2
respect to water ?
9 8 1
(A) (B) (C) 2 (D)
8 9 2
78. ) A ray of light passes from a medium A having refractive index 1.6 to the medium B having refractive
index 1.5. The value of critical angle of medium A is ...... .
æ 16 ö æ 1ö 16 æ 15 ö
(A) sin -1 ç ÷ (B) sin -1 ç ÷ (C) sin -1 (D) sin -1 ç ÷
è 15 ø è 2ø 15 è 16 ø
79. ) Angle of minimum deviation for a prism of refractive index 1.5 is equal to the angle of prism of given
prism. Then the angle of prism is ...... (sin 48°36' = 0.75)
(A) 41°24' (B) 60° (C) 80° (D) 82°48'
80.
141) Power of plane mirror is ......
(A) ฀ (B) 2D (C) 0 (D) 4D
81. ) If deviation by a prism with small prism angle with refractive index 1.6 is 3.6°, then prism angle is
......
(A) 7° (B) 6° (C) 5° (D) 8°
82. ) If radius of curvature of curved surface of plano-convex lens of refractive index 1.5 is 60 cm, then its
focal length is ...... cm.
(A) –60 (B) 120 (C) 60 (D) –120
152)
83. For glass lens f = +50 cm. Then power of lens is ......
(A) + 0.02D (B) – 2D (C) + 2D (D) – 0.02D
84. ) What is the type of nature of image formed for an object placed an axis of concave mirror between
pole and centre ?
(A) Real, inverted and diminished. (B) Virtual, erect and diminished.
(C) Real, inverted and magnified. (D) Virtual, erect and magnified.
85. ) The radii of curvature of the faces of a double convex lens are 10 cm and 15 cm. Its focal length is
12 cm. What is the refractive index of material of lens ?
(A) 1.33 (B) 1.50 (C) 1.62 (D) 2.42
86.
157) Find equivalent focal length due to combination of two convex lens are in contact having a focal length
both them 30 cm.
(A) 15 cm (B) 20 cm (C) 30 cm (D) 40 cm
87. ) A tank is filled with water to a height of 16 cm. Find the apparent depth of a needle lying at the
4
bottom of the tank, measured by a microscope. Refractive index of water (mw) is :
3
(A) 9.4 cm (B) 10.6 cm (C) 12.0 cm (D) 8.0 cm
88. ) Light from a point source in air falls on a spherical glass surface (n = 1.5 and radius of curvature
= 20 cm). The distance of the light source from the glass surface is 100 cm. Find the image distance.
(A) 200 cm (B) – 200 cm (C) – 100 cm (D) 100 cm
89. ) Double convex lenses are to be manufactured from a glass of refractive index 1.55 with both faces
of the same radius of curvature. What is the radius of curvature required if the focal length is to be
20 cm ?
(A) 22 cm (B) 2.2 cm (C) 44 cm (D) 4.4 cm

Wish You - All The Best

90. ) What is the focal length of a convex lens of focal length 30 cm in contact with a concave lens of
focal length 10 cm ? (Ignore thickness of lens)
(A) – 20 cm (B) – 40 cm (C) – 15 cm (D) – 30 cm
91. ) The refractive index of air with respect to vacuum is ......
(A) 1.0029 (B) 1 (C) 1.00029 (D) 1.029
92. ) A lens of power – 4.0 Diopter. It means ......
(A) Concave lens of focal length – 25.0 cm (B) Concave lens of focal length – 0.25 cm
(C) Convex lens of focal length + 0.25 cm (D) Convex lens of focal length + 25.0 cm
93. ) If f = 0.5 m for a glass lens, what is the power of the lens ?
(A) + 5D (B) + 2D (C) – 5D (D) – 2D
94. ) A magician during a show makes a glass lens with n = 1.47 disappear in a trough of liquid. What is the
refractive index of the liquid ? Could the liquid be water ?
(A) zero (B) 1.47 (C) 2.94 (D) infinite
95. ) Light from a point source in air falls on a spherical glass surface (n = 1.5 and radius of curvature =
20 cm). The distance of the light source from the glass surface is 100 cm. At what position the image
is formed ?
(A) 42.9 cm (B) 10 cm (C) 100 cm (D) 50 cm
96. ) What is the focal length of a convex lens of 30cm in contact with a concave lens of focal length 20cm
? Is the system a converging or a diverging lens? Ignore thickness of the lenses.
(A) 60 cm, concave lens (B) – 60 cm, convex lens
(C) 60 cm, convex lens (D) – 60 cm, concave lens

Wish You - All The Best

 Saraswati Vidhya Mandir, Gandhinagar
Chapters : 1,2 Std 12 : Physics Date : 26/08/25
Total Marks : 96 Unit Test Time : 03 Hour

Section [ A ] : 1 Mark MCQ

No Ans Chap Sec Que Universal_QueId

1. C

Welcome To Future - Quantum Paper

33. D

Welcome To Future - Quantum Paper

71. C

Welcome To Future - Quantum Paper

 Saraswati Vidhya Mandir, Gandhinagar
Chapters : 1,2 Std 12 : Physics Date : 26/08/25
Total Marks : 96 Unit Test Time : 03 Hour
//X Section A
• Choose correct answer from the given options. [Each carries 1 Mark] [96]
1.

2.

3.

4.

5.

Welcome To Future - Quantum Paper

6.

7.

8.

9.

10.

Welcome To Future - Quantum Paper

11.

12.

13.

14.

15.

Welcome To Future - Quantum Paper

16.

17.

18.

19.

20.

Welcome To Future - Quantum Paper

21.

22.

Welcome To Future - Quantum Paper

23.

24.

25.

26.

27.

28.

Welcome To Future - Quantum Paper

29.

30.

31.

Welcome To Future - Quantum Paper

32.

33.

34.

35.

Welcome To Future - Quantum Paper

36.

37.

38.

Welcome To Future - Quantum Paper

39.

40.

41.

42.

43.

Welcome To Future - Quantum Paper

44.

45.

46.

47.

Welcome To Future - Quantum Paper

48.

49.

50.

51.

52.

53.

Welcome To Future - Quantum Paper

54.

55.

56.

57.

Welcome To Future - Quantum Paper

58.

59.

60.

61.

62.

Welcome To Future - Quantum Paper

63.

64.

65.

66.

67.

Welcome To Future - Quantum Paper

68.

69.

70.

71.

72.

Welcome To Future - Quantum Paper

73.

74.

75.

Welcome To Future - Quantum Paper

76.

77.

78.

79.

Welcome To Future - Quantum Paper

80.

81.

82.

83.

Welcome To Future - Quantum Paper

84.

85.

86.

87.

88.

Welcome To Future - Quantum Paper

89.

90.

91.

Welcome To Future - Quantum Paper

92.

93.

94.

95.

Welcome To Future - Quantum Paper

96.

Welcome To Future - Quantum Paper