Question

If a person is reading a novel, then his ciliary muscles___.

• A. contract
• B. expand
• C. remains in the previous position
• D. can't say

Answer 1

The correct option is A

contract

When one is seeing things that are nearby, the ciliary muscles contract to decrease the focal length of the eye lens.
The reason is, as the ciliary muscles contract, they loosen the ciliary fibers which are attached to the envelope of the lens. Thus the lens obtains more curved shape i.e the focal length is reduced.