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Question

For an incident light ray on a mirror, If the angle between the mirror and the incident ray is $$30^{\circ}$$, what will be the angle of reflection?


A
30
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B
60
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C
90
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D
150
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Solution

The correct option is B $$60^{\circ}$$
Angle between mirror and incident ray=$$30^{o}$$

Hence, angle of incidence, $$i=90^{o}-30^{o}=60^{o}$$=angle between incident ray and normal

And , angle of reflection=angle of incidence

$$\implies$$ angle of reflection=$$60^{o}$$

Answer-(B).

Physics

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