Question

The Angle between Reflecting Surface (Plane Mirror) and Reflected Ray is 45 degree. What is the Angle of Incidence? ​

Answer 1

The angle of incidence will be 45°

Angle of incidence = Angle of reflection

angle of reflection= 90°-45°

Angle of reflection=45°=Angle of incidence

Answer 2

Answer:

We know, from the laws of reflection, that

∠i=∠r

Given, ∠i=45°

⇒∠r=45°

∴ The angle of incidence is 45°