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9th Class Science Sound Question Bank Sound

  • question_answer
    If the wavelength of a sound of frequency \[350\,\,Hz\] is\[0.5\,\,m\]. Find the velocity of sound.

    A) \[700\,\,m\,\,{{s}^{-1}}\]         

    B)        \[175\,\,m\,\,{{s}^{-1}}\]  

    C) \[17.5\,\,m\,\,{{s}^{-1}}\]        

    D)        \[70\,\,m\,\,{{s}^{-1}}\]

    Correct Answer: B

    Solution :

    \[V=n\lambda =350\times 0.5=175\,\,m\,\,{{s}^{-1}}\]


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