What will happen to the lens and the ciliary muscles when we look at nearby objects?

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Ciliary muscle : contract and Lens : focal length decreases

Ciliary muscle : contract and Lens : focal length increases

Ciliary muscle : contract and Lens : focal length remains same

None of these

answer is A.

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Detailed Solution

Ciliary muscles contract and focal length of the nearby objects decreases when we look at nearby objects.
When we look at the nearby objects, ciliary muscles are under pressure, so they contract, and the lens becomes thick. The curvature of the lens increases. Hence, the focal length of the eye lens decreases.

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