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JEE Main & Advanced Physics Wave Mechanics Question Bank Self Evaluation Test - Waves

  • question_answer
    The bulk modulus of a liquid of density 8000 kg\[8000kg\,{{m}^{-3}}\]is \[2\times {{10}^{9}}N\,{{m}^{-2}}\]. The speed of sound in that liquid is (\[in\,m\,{{s}^{-1}}\])  

    A)  200

    B)  250  

    C) 100

    D) 500

    Correct Answer: D

    Solution :

    [d] The speed of sound in liquid, \[v=\sqrt{\frac{k}{\rho }}=\sqrt{\frac{2\times {{10}^{9}}}{8000}}=\sqrt{\frac{1}{4}\times {{10}^{6}}}\] \[v=\frac{1}{2}\times {{10}^{3}}=500m\,{{s}^{-1}}\]


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