Question

Ray of light is reflected by an angle of 25 degree from a smooth polished surface
(i)what is the angle of reflection?
(ii) if the angle of incidence is doubled by how much will the angle of reflection increase​

Answer 1

Answer:

60

According to first law of reflection incident and reflected angles are equal. So, reflected angle will be 30 degrees. Reflected angle and angle B together make up the angle between normal and the surface that is 90 degrees. So, Angle b = (90 - reflected angle), which is (90-30) = 60 degree.

Answer 2

Explanation:

1-25°

2-it increases as Ang of incidence is directly proportional angle of incidence