Question

A point source of light B is placed at a distance L in front of the centre 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 distance 2L from it as shown. 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

Answer 1

Answer: (D)

3d

Answer 2