Question

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A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?​

Answer 1

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A person with a myopic eye cannot see objects beyond 1.2 m distincti What should be the type of the corrective lens used to restore proper vision?

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Ans. A person with a myopic eye can use concave lens to restore proper vision.

Answer 2

Answer:

Given that,

The person can't see objects beyond 1.2 m

directly

So, in order to view the distances beyond

1.2 m, the focal length of the lens should be

1.2 m.

Now, the power

P =1/f

P = 1/1.2

P = 0.83 D

So, the person suffers from Myopia, the corrective lens will be concave or diverging

lens.

Hence, the power is 0.833 D