1.

A person suffering from shortsightedness can see objects lying in between 20 cm to 100 cm. To see objects lying at infinity he has to use which lens and of what focal length?

A. Concave lens, 20 cm
B. Convex lens, 80 cm
C. Convex lens, 120 cm
D. Concave lens, 100 cm
Answer» E.


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