BCECE Medical BCECE Medical Solved Papers-2011

  • question_answer
    Consider a gas with density p and c as the root mean square velocity of its molecules contained in a volume. If the system moves as whole with velocity v, then the pressure exerted by the gas is

    A)  \[\frac{1}{3}\rho {{\overline{c}}^{2}}\]

    B)  \[\frac{1}{3}\rho {{(c+v)}^{2}}\]

    C)  \[\frac{1}{3}\rho {{(\overline{c}-v)}^{2}}\]

    D)  \[\frac{1}{3}\rho \,\,{{(\overline{c}-v)}^{2}}\]

    Correct Answer: A

    Solution :

    Pressure of ideal gas, \[p=\frac{1}{3}\,\rho {{\overline{c}}^{2}}\] \[p\propto \rho \]


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