Question

The focal length of the eye lens increases when eye muscles ____________.

विकल्प

• are relaxed and lens becomes thinner

• contract and lens becomes thicker

• are relaxed and lens becomes thicker

• contract and lens becomes thinner

Answer 1

The focal length of the eye lens increases when eye muscles are relaxed and lens becomes thinner.

Explanation:

Ciliary muscles modify the curvature of the eye lens. When eye muscles are relaxed, the eye lens becomes thinner thereby are relaxed, the eye lens becomes thinner thereby increase in the focal length of the eye lens.