A ray of light strikes a mirror at an angle of incidence of 30°. what is the angle of reflection
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Ray AB strikes the mirror PQ at B and gets reflected along BC according to the laws of reflection. The ray BC incident on mirror QR makes an angle of 30o with the mirror. So, the angle of incidence on this mirror is 90o - 30o = 60o. Hence, the angle of reflection is also 60o.
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