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3 February, 15:37

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

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  1. 3 February, 16:10
    0
    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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