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CBSE-IX-Science

10: 2-Sound

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  • #14
    A sound waves travels at a speed of. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
    Ans : Since we know that

    339 = 0.015

    ν = 339/0.015 = 22600 Hz

    Since the resulting frequency is beyond the audible range of human beings (20Hz to 20kHz) therefore sound will not be audible to human ears.