Question

The angle of incident on a plane mirror is 30°. The angle of reflection will be

• A. 30°
• B. 60°
• C. 15°
• D. 0°

Answer 1

The correct option is A

30°

The explanation for correct.

1. A plane mirror is the best reflection surface.
2. ∠i = ∠r where ∠i is the angle of incident ray, ∠r is the angle of reflected rays.
3. The incident ray, the reflected rays and the normal and the point of incident, all lie in the same place.
4. Hence if the angle of incident ray is 30° then the angle of reflection is 30°

The explanation for incorrect,

All other option is not correct.