Question

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

A. 28
B. 30
C. 32
D. 34

Answer 1

Correct Answer - B
Maximum number or relfections `=[(l)/(x)]` , where `x=0.2tan30^(@)`