The focal length of the eye lens increases when eye muscles
are relaxed and lens becomes thicker
are relaxed and lens becomes thinner
contract and lens becomes thicker
contract and lens becomes thinner
When the muscles are relaxed, the lens becomes thin. Thus, its focal length increases.
Which of the following is not a part of the human eye?
(a) the lens moves in or out
(b) the retina moves in or out
(c) the lens becomes thicker or thinner
(d) the pupil becomes larger or smaller
How does the eye change in order to focus on near or distant objects?