Light traveling in air enters the flat side of a prism made of crown glass (n=1.52), as shown below. Will the light pass through the o

Question

Light traveling in air enters the flat side of a prism made of crown glass (n=1.52), as shown below. Will
the light pass through the other side of the prism or will it be totally internally reflected? Show all work.

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Calantha 3 years 2021-08-18T00:28:07+00:00 1 Answers 81 views 0

Answers ( )

  1. dangkhoa
    0
    2021-08-18T00:29:08+00:00
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    Answer:

    since the critical angle is 41.1 degree while the incident angle of light on the other face of the prism is 45 degree

    so it will get reflected on the other face of the prism

    Explanation:

    As we know by the law of refraction

    n_1 sin\theta_1 = n_2 sin\theta_2

    here we know that

    n_1 = 1.52

    \theta_1 = \theta_c

    for total internal reflection we know that

    n_2 = 1

    \theta_2 = 90

    so we have

    1.52 sin\theta_c = 1

    \theta_c = 41.1 degree

    since the critical angle is 41.1 degree while the incident angle of light on the other face of the prism is 45 degree

    so it will get reflected on the other face of the prism

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