Question

Two plane mirrors A and B are aligned parallel to each other as shown in the figure. A light ray is incident at an angle of `30^(@)` at a point just inside one end of A. The number of times the ray undergoes reflections (including the first one) before it emerges out is

A. `29`
B. `30`
C. `31`
D. `32`

Answer 1

Correct Answer - C

Answer 2

yes answer is c  31 reflections (maximum)   ,again reflections including 1st one and last one(in maximum case)