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NEET Physics Kinetic Theory of Gases NEET PYQ-Kinetic Theory Of Gases

  • question_answer
    The molecules of a given mass of a gas have r.m.s. velocity of \[200\,\,m{{s}^{-1}}\] at \[27{{\,}^{o}}C\] and \[1.0\times {{10}^{5}}\,N{{m}^{-2}}\] pressure. When the temperature and pressure of the gas are respectively, \[127{{\,}^{o}}C\] and \[0.05\times {{10}^{5}}\,N{{m}^{-2}},\] the r.m.s. velocity of its molecules in \[m{{s}^{1}}\] is :                                                                                                                                [NEET - 2016]

    A)  \[100\sqrt{2}\]  

    B)       \[\frac{400}{\sqrt{3}}\]

    C)  \[\frac{100\sqrt{2}}{3}\]           

    D)       \[\frac{100}{3}\]

    Correct Answer: B

    Solution :

    [b]
    \[\Rightarrow \]   \[v=\frac{400}{\sqrt{3}}\,m/s\]


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