if the index of refraction is 2 the speed of light is– times the speec of vacuum ?

Question

if the index of refraction is 2 the speed of light is…….. times the speec
of vacuum ?

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Eirian 2 months 2021-07-22T08:52:41+00:00 1 Answers 2 views 0

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    2021-07-22T08:54:28+00:00

    Answer:2

    Explanation:

    2

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )