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5 February, 19:25

What is the index of refraction in quartz if light travels at 2.0567 x 108m/s when in quartz?

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  1. 5 February, 19:48
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    Index of refraction of a substance =

    (speed of light in vacuum) / (speed of light in the substance)

    Index in quartz = (2.9979 x 10⁸ m/s) / (2.0567 x 10⁸ m/s)

    Index = 1.4576 (no units)
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