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  3. 9th Class
  4. Science
  5. Work and energy

9th Class Science Work and energy Question Bank Work, Energy and Sound

  • question_answer
    Sound waves travel in air with a speed of about 340 m/s. What is the wavelength of sound whose frequency is 500 hertz?

    A) 0.68 m 

    B) 0.70 m

    C) 0.72 m 

    D)        0.74 m

    E) None of these

    Correct Answer: A

    Solution :

    Not Available  


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