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Q.

The curvature of the eye lens can be modified by _____.

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a

Iris

b

Cornea

c

Pupil

d

Ciliary muscles

answer is A.

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Detailed Solution

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  • The substance that makes up the eye lens is fibrous and jelly-like.
  • The ciliary muscles can alter their curvature to some amount, changing their focal length.
  • When the muscles are relaxed, the lens becomes thinner and its curvature reduces, increasing the focal length.
  • Similar to this, when the ciliary muscles tighten, the eye's lenses become larger and more curved, which reduces the focal length of the eye.
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The curvature of the eye lens can be modified by _____.