Answer to Question #302793 in Optics for Hassan umar

Question #302793

If the angle of incidence of a ray of light on a plane mirror is 40°, the deviation of the incident ray after reflection is

Expert's answer

Answer

Angle of incidence

i=40°

According to law of reflection

i=r=40°

So angle of deviation

d=180°-2*40°=100°

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