Question

The angle of incidence of a light ray on a mirrored surface is 69.2o. What is the angle between the incident and reflected rays?

Answer 1

Given:

The angle of incidence of a light ray on a mirrored surface is

`\angle i=69.2^(\circ)`

Required: Angle between the incident and reflected ray.

Step-by-step explanation:

The diagram can be drawn as

According to the laws of reflection,

`\angle i=\angle r`

So, the angle between the incident and reflected rays are

`\begin{gathered} \angle i+\angle r=69.2^(\circ)+69.2^(\circ) \\ =138.4^(\circ) \end{gathered}`

The angle between the incident and the reflected ray is 138.4 degrees.

Final Answer: The angle between the incident and the reflected ray is 138.4 degrees.