Q.

Persons suffering from myopia are advised to use –

A. convex lens
B. concave lens
C. piano-convex lens
D. plano-concave lens
Answer» B. concave lens
Explanation: A concave lens is used to correct short-sightedness (myopia). In myopia, images are formed in front of the retina, resulting in a blurred image. This occurs when the eye is relatively too long or the refractive powers of the cornea and lens of the eye are relatively too strong.
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