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    The frequency of a sound wave is 50 Hz and its wavelength is 4 m. What is the speed of thesound wave?
    Question

    The frequency of a sound wave is 50 Hz and its wavelength is 4 m. What is the speed of thesound wave?

    A.

    400 m/s

    B.

    80 m/s

    C.

    100 m/s

    D.

    200 m/s

    Correct option is D


    Given,
    frequency = 50 Hz,
    wavelength = 4 m.
    As we knwo, the velocity of wave = Frequency Wavelength
    = 50 x 4
    = 200 m/s.
    Therefore, the distance travelled by the sound wave in 3 s 200 x 3 = 600 m.

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