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Parts of Eye and Their Functions

When the cili...

Question

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

A

increases

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B

decreases

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C

remains constant

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Solution

The correct option is B decreases
When the ciliary muscle contracts, the eye lens becomes thick and thereby 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. When one is seeing things that are nearby, the ciliary muscles contract to decrease the focal length of the eye lens.

Relaxation of the ciliary muscles causes the focal length of the eye lens to ________

Ciliary muscles are responsible for changing the focal length of the eye lens according to the distance of the object.

Q. You are given that the diameter of the eyeball is about

2.3

cm and a normal eye can adjust the focal length of its eye lens to see objects situated anywhere from

25

cm to an infinite distance away from it.

What is the power of the (normal) eye lens, when ciliary muscles are fully relaxed?

What is the power of the (normal)eye lens, when ciliary muscles are in their maximum contract position?

The maximum variation in the power of the eye lens, when it adjusts itself, from the normal relaxed position to the position where the eye can see the nearby object clearly?

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Parts of Eye and Their Functions

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