Question

An incident ray strikes a plane mirror making an angle of 60° with the plane miror What would be the angle of incidence and the angle of reflection?

Answer 1

Explanation:

60, 60 are incident, reflected angles

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Answer 2

Since the mirror is plain and,
we know that, angle of incidence = angle of reflection
Let angle of incidence be x
∴ angle of reflection =x

angle of incidence = angle of reflection = x —————①

Normal is perpendicular to the mirror and therefore
60+x=90 °
x=90 - 60
x= 30 ° ——————②

From ① and ②
Angle of incidence = angle of reflection = 30 °

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