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28 August, 17:41

If the speed of light in a substance is 2.26 x 10^8 m/s, what is the index of refraction of that substance?

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  1. 28 August, 18:50
    0
    1.33

    Explanation:

    speed of light in vacuum, c = 3 x 10^8 m/s

    speed of light in medium, v = 2.26 x 10^8 m/s

    The refractive index of the medium is given by

    μ = speed of light in vacuum / speed of light in medium

    μ = (3 x 10^8) / (2.26 x 10^8)

    μ = 1.33
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