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  • 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

The focal length of the eye lens increases when eye muscles
(a) are relaxed and lens becomes thinner
(b) contract and lens become thicker
(c) are relaxed and lens becomes thicker
(d) contract and lens becomes thinner

Answers (1)

Hence, the correct answer is option (a).

Explanation:-


When eye muscles are relaxed and become thinner, the focal length of the eye lens increases. Similarly, when eye muscles are contracted, focal length decreases.

The sharp image of the distant object is formed at the retina by adjusting the focal length of eye lens. This enables us to focus accurately on distant objects.

 

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