A boy stands straight in front of a mirror at a distance of 30 cm from it. He sees his erect image whose height is (1/5) of his real height. The mirror he is using, is

Question

A boy stands straight in front of a mirror at a distance of 30 cm from it. He sees his erect image whose height is (1/5) of his real height. The mirror he is using, is (A) plane (B) convex (C) concave (D) plano-concave

Tardigrade Admin · Accepted Answer

Both concave and convex mirror give virtual image but a concave mirror gives a magnified virtual image (when object is placed between F and P). Since, the boy sees his image of diminished size, so the mirror must be convex.

Q. A boy stands straight in front of a mirror at a distance of $30 c m$ from it. He sees his erect image whose height is $\frac{1}{5}$ of his real height. The mirror he is using, is

plane

convex

concave

plano-concave

Both concave and convex mirror give virtual image but a concave mirror gives a magnified virtual image (when object is placed between $F$ and $P$ ). Since, the boy sees his image of diminished size, so the mirror must be convex.

Q. A boy stands straight in front of a mirror at a distance of 30cm from it. He sees his erect image whose height is 51​ of his real height. The mirror he is using, is