9th Class Science Sound Question Bank Self Test-7

  • question_answer
    The frequency of a wave travelling at a speed of 500 ms1 is 25 Hz. Its time period will be ____.

    A)  0.04 s

    B)  0.05 s         

    C)  0.02 s 

    D)  0.01 s

    E)  None of these

    Correct Answer: A

    Solution :


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