Question

A point source of light, S is placed at a distance L in front of the centre of plane mirror of width d which is hanging vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror, at a distance 2 L as shown below. The distance over which the man can see the image of the light source in the mirror :
(A) d (B) 2d
(C) 3d (D) d/2

Answer 1

Answer:

c 3d

Explanation:

Ij=d

gj=gh+hi+ij

=d+d+d=3d