Question

If an incident ray falls upon a mirror such that the angle between the incident ray and the surface of the

mirror is 90⁰

, the angle of incidence is:​

Answer 1

Answer:

The normal ray, at the point of incidence, is perpendicular to the surface AB. Therefore, if the incident ray forms an angle of 50 degrees with the surface, it will form an angle of 90 - 50 or 40 degrees with the normal ray.