Question

Light striking a mirror at a 50° angle will be reflected at an angle _____.

greater than 50°
less than 50°
equal to 50°

Answer 1

equal TO 50 degree because angle of incidence is equal to angle of reflection

Answer 2

Since the angle between the mirror surface and the incident ray is 50 degrees.
Therefore, the angle of incidence to the normal will be 90- 50 = 40 degrees.
However, the angle of reflection is equal to the angle of incidence = 40 degrees.

Thus, Angle of i + angle of r = 40 + 40 = 80
80 > 50.
Thus the ray of light will be reflected at an angle greater to the incident ray.