Question

A …………… mirror is made by silvering the …………… surface of a piece of a hollow sphere.
(a) convex, outer
(b) plane, outer
(c) concave, outer
(d) concave, inner

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Answer

(c) concave, outer

Reason — A concave mirror is made by silvering the outer (or bulging) surface of a piece of a hollow sphere such that the reflection takes place from the hollow (or concave) surface.

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