Hello all, can you please answer this? I am struggling with this. I need this by tommorow. Question is below: Light waves of freq

Question

Hello all, can you please answer this? I am struggling with this. I need this by tommorow. Question is below:

Light waves of frequency 6 x 10^14 Hz have a wavlength of 3.75 x 10^-7 m in water. What is their speed in water?

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Thu Giang 4 years 2021-07-22T22:25:21+00:00 1 Answers 28 views 0

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  1. thanhha
    0
    2021-07-22T22:26:39+00:00
    Reply

    c_{water} = 2.25\times 10^{8}m/s

    Explanation:

    The speed of light in any medium is given by

    c = \lambda \nu

    where \lambda is the wavelength and \nu is the frequency. In water,

    c_{water} = \lambda_{water} \nu

    \:\:\:\:\:\:\:\:= (3.75\times 10^{-7}\:m)(6\times 10^{14})\:Hz

    \:\:\:\:\:\:\:\:= 2.25\times 10^{8}\:m/s

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