Question

Marks : 30
SET -A
SECTION -A.
When the muscles are relaxed, the focal length of the lens of the eyes.
a) Increases
b) Decreases
c) Remain same
d) First increase and then decrease 1
1
41
HULLE​

Answer 1

Answer:

b) decreases

Explanation:

When the ciliary muscles are relaxed, the focal length of the eye-lens is maximal and the distant objects are in focus (infinity). When the ciliary muscles contract they shorten the focal length of the eye-lens to bring nearer objects into focus.