Question

If the angle between the plane mirror and the incident ray is 40%, what are the angles of incident and reflection​

Answer 1

Answer:

the same referention of angel

Answer 2

Answer:

It states the angle made by the light ray with mirror is 40°. This is not angle of incidence.

-> Angle of incidence is the angle made by light ray with the vertical line drawn from the point where it lands on the mirror.

=> This is 90 - 40 = 50°.

Now:

Angle of incidence = Angle of reflection = 50°

So, light bends by 50 + 50 = 100°