Question

A ray is reflected in turn by three plain mirrors mutually at right angles to each other. The angle between the incident and the reflected rays is

• A. $90 ^ { \circ }$
• B. $60 ^ { \circ }$
• C. $180 ^ { \circ }$
• D. None of these

Answer 1

Answer: (C)

$180 ^ { \circ }$

Answer 2

Ray after reflection from three mutually perpendicular mirrors becomes anti-parallel.