Question

The angle between the reflected surface and the incident ray is 110 degree.What is the value of angle of incidense?​

Answer 1

Given:

The angle between the reflected surface and the incident ray is 110°.

To find:

Angle of incidence ?

Calculation:

• Since angle between incident ray and reflecting surface is 110° , we can draw the following diagram. Please see the attached image.

• Now, angle of incidence is equal to the angle made by incident ray with normal. Let it be $\theta$.

$\therefore \theta = {110}^{ \circ} - {90}^{ \circ}$

$\implies \theta = {20}^{ \circ}$

So, angle of incidence is 20°.