Question

A light ray is incident on a mirror such that it makes it makes ${30}^{\circ }$ with the surface of the mirror. The angle of reflection is

• A. ${60}^{\circ }$
• B. ${90}^{\circ }$
• C. ${20}^{\circ }$
• D. $0^{\circ }$

Answer 1

The correct option is A

${60}^{\circ }$

AOX forms a right angle. So, the incident ray makes ${60}^{\circ }$ with the normal.

According to the first law of reflection,
Angle of incidence = Angle of reflection
So Angle of reflection = ${60}^{\circ }$