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TIR in equilateral prism

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TIR in equilateral prism

    • Posted by Nikhil Goswami 6 years, 3 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Yogita Ingle 6 years, 3 months ago

    For a normal incidence on any surface of the prism, the transmitted ray makes an angle of 60 degrees which greater than the critical angle of the prism which 42 degrees.
    Therefore, there is a total internal reflection. there will be TIR as long as the angle of incidence is greater than 42 degrees on the AC surface (in the given diagram)

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