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Human Eye

The eye lens ...

Question

The eye lens becomes thin when the ciliary muscle and it becomes thicker when the ciliary muscle

A

relaxes

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B

contracts

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C

weakens

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D

flattens

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Solution

The correct option is B contracts
When the ciliary muscle relaxes, the eye lens becomes thin and increases its focal length. When it contracts, the eye lens becomes thick and decreases its focal length.

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Similar questions

Q. When the ciliary muscles are relaxed, the focal length of the eye lens

Q. Which of the following changes occur when you walk out of bright sunshine into a poorly lit room ?
(a) the pupil becomes larger (b) the lens becomes thicker
(c) the ciliary muscle relaxes (d) the pupil becomes smaller

Q. When the ciliary muscles are contracted, the focal length of the eye lens

Q. When one is seeing things that are nearby, the ciliary muscles contract to decrease the focal length of the eye lens.

Q. Question 13
The focal length of the eye lens increases when eye muscles

(a) are relaxed and lens becomes thinner
(b) contract and lens becomes thicker
(c) are relaxed and lens becomes thicker
(d) contract and lens becomes thinner

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