question_answer

A point source of light B is placed at a distance L in front of the center of a mirror of width 'd' hung vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 1L from it as shown in fig. The greatest distance over which he can see the image of the light source in the mirror is

A) d/2

B) d

C) 2d

D) 3d