Question

what will be the angle of reflection if a ray of light strikes a plane mirror at an angle of 90°

Answer 1

The answer is 0°. THis question came in our exams.

Answer 2

Hi friend.....
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Here's your answer.....
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We know the angle of reflection is equal to the angle of incidence.

Therefore, when a ray strikes a plane mirror at 90° , the ray reflects back in the opposite direction on the same path.

So, the angle of reflection will be 0°
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