Question

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

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

Answer 1

The correct option is C ${180}^o$

When light falls on three mutually perpendicular mirror it gets reflected back in the same direction. Angle between incident ray and reflected ray = ${180}^{\circ }$