Two plane mirrors are inclined to each other at an angle of 45°. A ray of light is incident on mirror I and is reflected by mirror I and later by the mirror II. The total deviation of the ray for the given situation is
A45°
B130°
C180°
D90°
answer should be 180 rad
Ans 1:
Class : Class 10
Solution assumes that the reflected ray by the second mirror will retrace it's path and the angle of incidence on the second mirror is 90 degrees. Question is how