1. A
   Violet and blue lights get scattered more than lights of all other colours by the atmosphere.
2. B
   Blue light gets absorbed in the atmosphere.
3. C
   Light of all other colours is scattered more than the violet and blue colour lights by the atmosphere.
4. D
   Ultraviolet radiations are absorbed in the atmosphere.

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1. A
   Optic nerves
2. B
   Cornea
3. C
   Ciliary muscles
4. D
   Retina

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1. A
   Real and erect
2. B
   Real and inverted
3. C
   Virtual and erect
4. D
   Virtual and inverted

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1. A
   A convex lens of focal length 1.4 m and power $+0.71\,D$
2. B
   A convex lens of focal length 1.4 m and power $-0.71\,D$
3. C
   A concave lens of focal length 1.4 m and power $+0.71\,D$
4. D
   A concave lens of focal length 1.4 m and power $-0.71\,D$

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

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1. A
   red colour is least scattered.
2. B
   red colours most scattered.
3. C
   wavelength of red colour is less than that of other colour.
4. D
   red colour looks attractive.

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1. A
   weakened ciliary muscles
2. B
   opaque eye lens
3. C
   elongated eyeball
4. D
   excessive curvature of eye lens

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1. A
   The lens is not likely to break.
2. B
   The lens allows the eye to focus on far objects as well as near objects.
3. C
   The eye can move up, down, left and right.
4. D
   The lens can allow varying amounts of light to enter the eye.

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

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1. A
   Atmospheric refraction
2. B
   Internal refraction
3. C
   external refraction
4. D
   Regular refraction

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1. A
   Combined effect of dispersion, refraction and reflection.
2. B
   Reflection alone
3. C
   Refraction alone
4. D
   Dispersion alone

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1. A
   Reflection
2. B
   Persistence of vision
3. C
   Power of accommodation
4. D
   Refraction

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1. A
   Cones
2. B
   Rods
3. C
   Both rods and cones
4. D
   Lines

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1. A
   Only (ii) and (iii)
2. B
   Only (i)
3. C
   Only (i) and (ii)
4. D
   (i), (ii) and (iii)

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1. A
   By a glass prism but not by rectangular glass slab.
2. B
   By a glass prism as well as a rectangular glass slab.
3. C
   By a rectangular glass slab but not by a glass prism.
4. D
   Neither by a glass prism nor by rectangular glass slab.

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1. A
   Long - sightedness or Hypermetropia
2. B
   Short - sightedness or myopia
3. C
   Astigmatism
4. D
   Cataract

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1. A
   $\lambda v < \lambda y < \lambda r$
2. B
   $\lambda v > \lambda y > \lambda r$
3. C
   $\lambda y < \lambda r < \lambda v$
4. D
   $\lambda y < \lambda r < \lambda r$

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

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1. A
   ciliary muscles
2. B
   optic nerves
3. C
   retina
4. D
   cornea

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1. A
   Bifocal lens whose upper portion is concave lens and lower portion is convex lens
2. B
   Concave lens
3. C
   Bifocal lens whose upper portion is convex lens and lower portion is concave lens
4. D
   Convex lens

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1. A
   Concave lens
2. B
   Prism
3. C
   Convex lens
4. D
   Bi - focal lens

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1. A
   3.25
2. B
   2.0
3. C
   1.414
4. D
   2.83

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1. A
   Scattering of light
2. B
   Total internal reflection of light
3. C
   Dispersion of light
4. D
   Reflection of light from the earth

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1. A
   Total reflection of light
2. B
   Diffusion of light
3. C
   Scattering of light
4. D
   Dispersion of light

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1. A
   depends on the size of the eyeball
2. B
   increases
3. C
   remains unchanged
4. D
   decreases

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