A ray of light is incident on a plane mirror at an angle of incidence of $30 °$ . What is the angle of reflection?

20 °

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60 °

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90 °

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30 °

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Solution

The correct option is D $30 °$
We know from laws of reflection,
Angle of incidence = Angle of reflection
Given,
Angle of incidence = $30 °$
Therefore, the angle of reflection is $30 °$ .

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