1. A
   dispersion, dispersion and scattering.
2. B
   Refraction, reflection and dispersion.
3. C
   Refraction, dispersion and internal reflection.
4. D
   Reflection, dispersion and total internal reflection.

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1. A
   Reflection
2. B
   Spectrum
3. C
   Dispersion
4. D
   Refraction

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1. A
   Reflection, refraction and dispersion
2. B
   Dispersion, scattering and total internal reflection
3. C
   Refraction, dispersion and total internal reflection
4. D
   Reflection, dispersion and refraction

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1. A
   Pupil
2. B
   Cornea
3. C
   Retina
4. D
   Eye lens

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1. A
   The person can read letters from 9 m which the normal eye can read from 6 m.
2. B
   The person can read letters from 6 m which the normal eye can read from 9 m.
3. C
   The person can read letters of 9 inches from 6 m
4. D
   The person can read the letters of 6 inches from a distance 9 m

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1. A
   1 and 2
2. B
   1 and 3
3. C
   1 and 4
4. D
   2 and 4

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1. A
   Is scattered the most by smoke or fog
2. B
   Is absorbed the most by smoke or fog
3. C
   Moves fastest in air
4. D
   Is scattered the least by smoke or fog

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1. A
   The band of 8 colours.
2. B
   The band of 5 colours.
3. C
   The band of 6 colours.
4. D
   The band of 7 colours.

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1. A
   Black
2. B
   Blue
3. C
   Red
4. D
   None of these.

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1. A
   Pupil
2. B
   Cornea
3. C
   Iris
4. D
   Ciliary muscles

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1. A
   Red
2. B
   Blue
3. C
   Orange
4. D
   Yellow

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1. A
   Red
2. B
   Blue
3. C
   Yellow
4. D
   Violet

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1. A
   Infrared light
2. B
   All of these
3. C
   ultraviolet light
4. D
   White light

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1. A
   shall never see a secondary rainbow
2. B
   Shall never see a rainbow
3. C
   May see a primary and a secondary rainbow as concentric arcs
4. D
   May see a primary and a secondary rainbow as concentric circles

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1. A
   Concave lens
2. B
   Plano - concave lens
3. C
   Convex lens
4. D
   Plano - convex lens

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1. A
   (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
2. B
   (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
3. C
   (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
4. D
   (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)

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1. A
   (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
2. B
   (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
3. C
   (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
4. D
   (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)

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1. A
   (a), (b) and (c)
2. B
   (b), (c) and (d)
3. C
   (a) and (b)
4. D
   (a), (c) and (d)

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1. A
   All the colours of the white light move with the same speed
2. B
   Red light moves fastest
3. C
   Blue light moves faster than green light
4. D
   Yellow light moves with the mean speed of that of the red and the violet light

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1. A
   Return into the same medium
2. B
   Bend away from the normal
3. C
   Pass straight
4. D
   Bend towards the normal

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1. A
   3.5 cm
2. B
   5.0 cm
3. C
   1.25 cm
4. D
   2.5 cm

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1. A
   90 cm
2. B
   45 cm
3. C
   30 cm
4. D
   15 cm

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1. A
   Violet
2. B
   Green
3. C
   Yellow
4. D
   Red

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1. A
   $\frac{4}{3}$
2. B
   $\frac{3}{2}$
3. C
   $\frac{2}{3}$
4. D
   $\frac{1}{3}$

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1. A
   decrease
2. B
   remain the same
3. C
   be zero
4. D
   increase

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