Subject :NSO Class : Class 9
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 9
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