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8 April, 18:19

A ray of light traveling from air into crown glass (n = 1.52) strikes the surface at an angle of

45 degrees. What will the angle of refraction be?

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  1. 8 April, 21:59
    0
    Answer: R = 28 degree

    Explanation:

    The given parameters are:

    Refractive index n = 1.52

    Incident angle I = 45 degree

    According to Snell law,

    Sin I/Sin R = n

    Where

    I = angle of incidence

    R = angle of refraction

    n = refractive index

    Substitute all the parameters into the formula

    1.52 = sin 45 / sin R

    Make sinR the subject of formula

    Sin R = sin 45/1.52

    Sin R = 0.46520

    R = sin^-1 (0.46520)

    R = 27.72 degree

    Therefore, the angle of refraction will be 28 degrees approximately.
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