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23 March, 06:21

2.) A radio wave in a vacuum has a wavelength

of 0.045 m. What is its frequency?

Sound, EM, Other

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  1. 23 March, 06:47
    0
    Frequency = 667 MHz.

    EM

    Explanation:

    The radio waves are the electromagnetic waves of a particular range of frequencies.

    Unlike the sound waves which require a medium to propagate, the radio waves can travel in a vacuum.

    The frequency of the radio waves ranges between 300 MHz to 600 MHz.

    The relation between the frequency and wavelength is given by the relation

    f = c / λ Hz

    Where c is the velocity of electromagnetic waves. c = 3 x 10⁸ m/s

    Given that the wavelength, λ = 0.045 m

    Substituting in the above equation

    f = 3 x 10⁸ m/s / 0.045 m

    = 667 MHz

    Hence, the frequency of the radio waves is, f = 667 MHz

    It is electromagnetic radiation (EM).
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