A ray moving through glass (n = 1.51) passes into acetone (n = 1.36). How much does its velocity change?

Question

A ray moving through glass (n = 1.51) passes into acetone (n = 1.36). How much does its velocity change?

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Vân Khánh 4 years 2021-08-28T09:50:06+00:00 1 Answers 6 views 0

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  1. thuthuy
    0
    2021-08-28T09:51:49+00:00
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    Answer:

    Change in velocity = 0.219 × 10⁸ m/s (Approx)

    Explanation:

    Given:

    Ray moving through glass (n1) = 1.51

    Ray moving through (n2) = 1.36

    Find:

    Change in velocity.

    Computation:

    Speed of light = 3 × 10⁸

    Change in velocity = [(c/n2) – (c/n1)]

    Change in velocity = [(c/n1) – (c/n1)]

    Change in velocity = 3 × 10⁸[(1/1.36) – (1/1.51)]

    Change in velocity = 3 × 10⁸[0.7352-0.6622]

    Change in velocity = 3 × 10⁸[0.073]

    Change in velocity = 0.219 × 10⁸ m/s (Approx)

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