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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2009

  • question_answer
    The rms velocity of molecules of a gas of density \[4kg\,{{m}^{-3}}\]and pressure \[1.2\times {{10}^{5}}\,N{{m}^{-2}}\]is

    A)  \[300m{{s}^{-1}}\]

    B)  \[900m{{s}^{-1}}\]

    C)  \[120m{{s}^{-1}}\]

    D)  \[600m{{s}^{-1}}\]

    Correct Answer: A

    Solution :

    \[{{v}_{rms}}=\sqrt{\frac{3p}{d}}\] \[=\sqrt{\frac{3\times 1.2\times {{10}^{5}}}{4}}=300m{{s}^{-1}}\]


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