An incident ray strikes a plane mirror at an angle of incidence of 50°. What is the decrease in the angle of reflection, if the incident ray moves to angle of incidence of 30°?
1
10°
2
20°
3
30°
4
40°
An incident ray strikes a plane mirror at an angle of incidence of 50°. What is the decrease in the angle of reflection, if the incident ray moves to angle of incidence of 30°?