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9th Class Science Sound

  • question_answer 31)
    A sound wave travels at a speed of 339 m s-1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?

    Answer:

    Here, speed of sound wave, v = 339 m Wavelength of sound wave, Frequency of the sound wave,     The sound is not audible as its frequency lies beyond the audible range (20 Hz to 20000 Hz).  


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