Question

Light falls on a plane reflecting surface. For what angle of incidence is the reflected ray normal to the incident ray.

• A. ${60}^o$
• B. ${45}^o$
• C. ${90}^o$
• D. ${30}^o$

Answer 1

The correct option is D ${30}^o$

The incident ray will have an angle of reflection of ${30}^0$ $($made with a surface normal to the mirror surface$).$

Hence,

option $\left(D\right)$ is correct answer.