Question

A ray of light falls on a plane mirror making an angle of 20 degree with the surface of the mirror .The value of the angle of reflection will be​

Answer 1

Answer:

20°

Explanation:

the answer will be 20 degree followed by the properties of light

Answer 2

Given,

The light ray makes 20° angle with the surface of the mirror.

To find,

The angle of reflection.

Solution,

We know that the angle of incidence is equal to the angle of reflection.

So, we have to calculate the value of angle of incidence.

Angle of incidence = 90° - angle between mirror surface and falling light ray = 90°-20° = 70°

Angle of incidence = Angle of reflection = 70°

Hence, the angle of reflection will be 70°.