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

  • question_answer
    A sound wave has a frequency of 5 kHz and wavelength 10 cm. How long will it take to travel 2.5 km?

    A) 5 s                   

    B) 4 s

    C) 3 s                   

    D)        2 s

    E) None of these

    Correct Answer: A

    Solution :

    Not Available  


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