BCECE Medical BCECE Medical Solved Papers-2009

  • question_answer
    An ideal gas at pressure p is adiabatically compressed so that its density becomes n times the initial value The final pressure of the gas will be \[\left( \gamma =\frac{{{C}_{p}}}{{{C}_{V}}} \right)\]

    A)  \[{{n}^{\gamma }}p\]

    B)  \[{{n}^{-\gamma }}p\]

    C)  \[{{n}^{(\gamma -1)}}p\]

    D)  \[{{n}^{(\gamma -1)}}p\]

    Correct Answer: A

    Solution :

    Volume of the gas \[V=\frac{m}{d}\] and using \[p{{V}^{\gamma }}=\] constant we get                 \[\frac{p}{p}={{\left( \frac{V}{V} \right)}^{\gamma }}={{\left( \frac{d}{d} \right)}^{\gamma }}\]                 \[p={{\left( \frac{nd}{d} \right)}^{\gamma }}p\] \[={{n}^{\gamma }}p\]


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