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9th Class Science Sound Question Bank Sound IIT JEE Subjective Problems

  • question_answer
    Ultrasonic waves of frequency of 25 KHz travel in a liquid. If the wavelength of waves produced in the liquid is 50 mm. What is the speed of waves in the liquid?

    Answer:

    We know, \[V=n\lambda \]         \[=25\times {{10}^{3}}\times 50\times {{10}^{3}}=1250\text{ }m{{s}^{1}}.\]


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