Question

What is the angle of deviation for a ray which is insident with an angle 45° on the plane mirror...​

Answer 1

Answer:

Explanation:

A ray of light is incident on a plane mirror at an angle of 30o. We want to determine the angle of deviation.

The rays AO and OB are the incident and reflected rays. OC is the path the the incident ray would have taken if it had not been reflected.

⇒ The angle of deviation is  ∠COB=60o+60o=120o.

Answer 2

Answer: 90°

Explanation: for finding deviation you can use deviation= 180°-2x. Where X is the incident angle.

Using the formula you get deviation 90°

Hope this helps you!