A light ray is incident on a smooth surface such that the angle between the ray and the surface is 20°. Find the angle of deviation
Explanation needed for class 7
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Explanation:
Angle of incidence =70
∘
Angle of reflection =70
∘
Angle between incidence ray and mirror is 20
0
So angle of incidence =90
0
−20
0
=70
0
And angle of reflection= Angle of incidencce =70
∘
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