NCERT Exercise 10.1 — Q4 - The Human Eye and the Colourful World
Question: The change in focal length of an eye lens is caused by the action of the (a) pupil (b) retina (c) ciliary muscles (d) iris
Answer: The correct option is (c) ciliary muscles. The crystalline lens of the eye is made of a fibrous, jelly-like flexible material. Its shape, curvature, and focal length can be modified to some extent....
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