STEMS 2021 Phy Cat A Q3
Source:
January 23, 2021
Problem Statement
There are two semi-infinite plane mirrors inclined physically at a non-zero angle with inner surfaces being reflective.
[*] Prove that all lines of incident/reflected rays are tangential to a particular circle for any given incident ray being incident on a reflective side. Assume that the incident ray lies on one of the normal planes to the mirrors.[/*]
[*] Try to guess the radius of circle by the parameters you can observe. [/*]