Question

In the following figure, the part whose focal length can be changed is:-

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

The eye lens which is a convex lens has the ability to change its focal length. The ciliary muscles help in changing the focal length of eye lens. This ability of the eye to focus the distant objects as well as the nearby objects on the retina by changing the focal length of the eye lens is called power of accommodation.