Question

How does the eye change in order to focus on near or distant objects ?
(a) The lens moves in or out (b) The retina moves in or out
(c) The lens becomes thicker or thinner (d) The pupil gets larger or smaller

Answer 1

Answer: (c) The lens becomes thicker or thinner

In order to focus on near and distant objects, the lens of the eye is changed to focus the light rays from the object on the retina.

The thickness and shape of the lens are changed by the Ciliary muscles that help in focusing on objects at different distances. The lens gets thinner to focus on distant objects and vice versa.