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Devices Made Using Plane Mirrors

a ray of ligh...

Question

a ray of light is incident on a plane mirror at an angle of 30 .what is the angle of reflection ? explain .

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Solution

The angle of reflection is 60 degrees that is (90⁰-30⁰) since the angle of incidence is measured between the incident ray and the normal. Therefore angle of reflection is also 60⁰as $∠ i = ∠ r$ by laws of reflection.

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