Question

Two mirrors A and B are placed at right angles to each other as shown in the figure.




A ray of light incident on mirror A at an angle of ${25}^{\circ }$ falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be

• A. ${25}^{\circ }$
• B. ${50}^{\circ }$
• C. ${65}^{\circ }$
• D. ${100}^{\circ }$

Answer 1

The correct option is C

${65}^{\circ }$

Angle of reflection for the ray reflected from mirror B will be ${65}^{\circ }$ because figure below shows how reflected ray from mirror A forms incident ray on mirror B and then reflected back by an angle of ${65}^{\circ }.$