(A) : Myopia can be corrected by using concave lens.
(R) : Nearsightedness is due to too much of convergence of incident beam

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Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

Both 'A' and ‘R’ are false

A' is true and 'R' is false

Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.

answer is A.

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Detailed Solution

In a myopic eye, the image of a distant object is formed in front of the retina and not at the retina itself. A concave(diverging) lens causes light rays to diverge before they strike the lens of the eye so that the image is formed on the retina. Hence, a concave lens is used to correct myopia.

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