Question

When a ray of light is incident normally on a plane mirror then the angle of reflection will be?

• A. $0^o$
• B. ${90}^o$
• C. ${180}^o$
• D. $-{90}^o$

Answer 1

The correct option is A $0^o$

As angle of incidence and angle of reflection is always equal hence angle of reflection should be $0°$ as normal to the plane incidence means $0°$ is the angle of incidence from normal.