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14 November, 21:22

What is the wavelength of an ekectromagnetic wave that has a frequency of 40,000 hz? the speed of light is 3x10^8 m/s?

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  1. 14 November, 23:09
    0
    Solution

    As,

    speed=frequency * wavelengths

    so,

    wavelength=speed/frequency

    =3*10^8/40000

    =7500m
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