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21 June, 23:57

What is the critical angle for glass when the refractive index is 1.45

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  1. 22 June, 00:10
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    Answer:43.6°

    Explanation:

    Refractive index=n=1.45

    Critical angle=c

    n=1/sinc

    1.45=1/sinc

    Cross multiply

    1.45sinc=1

    Divide both sides by 1.45

    (1.45sinc) / 1.45=1/1.45

    sinc=0.6897

    c=sin (inverse) (0.6897)

    c=43.6°

    Critical angle is 43.6°
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