The focal length of the eye lens changes due to the action of:

Pupil

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Iris

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Ciliary muscles

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Cornea

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Solution

The correct option is C
Ciliary muscles

The focal length of the eye lens changes due to the contraction and relaxation of ciliary muscles. This accomodation ability of our eyes enables us to see the images of objects at different distances clearly.

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The focal length of the eye lens changes due to the action of:

Why does the eye need to change the focal length of the eye lens?

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