A beam of light shines on a plane mirror with an angle of incidence of 40°. The reflected light then hits another parallel plane mirror. Wha

Question

A beam of light shines on a plane mirror with an angle of incidence of 40°. The reflected light then hits another parallel plane mirror. What is the angle of reflection from the second mirror? A. 40° B. 50° C. 80° D. 90° E. 140°

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Thanh Hà 4 years 2021-07-29T09:19:38+00:00 1 Answers 12 views 0

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  1. Adela
    0
    2021-07-29T09:21:16+00:00
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    Answer:

    40degrees

    Explanation:

    Since the mirrors are parallel, the angle of incidence on the first mirror will be the same as the angle of incidence on the second mirror.

    Angle of incidence on the second mirror = 40degrees

    According to the second law of reflection, the angle of incidence is equal to the angle of reflection. Hence;

    angle of incidence = angle of reflection = 40degrees

    This shows that the angle of reflection from the second mirror is 40degrees

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