Question

What is the angle of refraction when a ray of light sall normally on a plan mirror

Answer 1

Answer:

The angle of reflection as well as incidence is zero for a normal incidence

Explanation:

• DURING A NORMAL INCIDENCE  [ when the ray of light falls perpendicular to the plane mirror ] THE INCIDENT RAY, REFLECTED RAY COINCIDE THE NORMAL POSITION.

• THEREFORE THERE IS NO ANGLE OF INCIDENCE AS WELL AS ANGLE OF REFLECTION.

                                  ∠i  = ∠r = 0 degree

Answer 2

Answer:

zero degree

Explanation:

as it falls normally , angle of incidence = 0°and

angle of refraction = 0° , so there will be no refraction and the ray of light will bounce back along the same path.