CMC Medical CMC-Medical VELLORE Solved Paper-2010

  • question_answer
    An ideal gas is expanded adiabatically at an initial temperature of 300 K so that its volume is doubled. The final temperature of the hydrogen gas is (y = 1.40)

    A)  227.36 K             

    B)  500.30 K

    C)  454.76 K             

    D)  \[-\,47{}^\circ C\]

    E)  None of these

    Correct Answer: A

    Solution :

                                    \[T{{V}^{\gamma -1}}=\]constant \[\therefore \]  \[\frac{{{T}_{2}}}{{{T}_{1}}}={{\left( \frac{{{V}_{1}}}{{{V}_{2}}} \right)}^{\gamma -1}}\]                 \[{{T}_{2}}={{T}_{1}}{{\left( \frac{{{V}_{1}}}{{{V}_{2}}} \right)}^{\gamma -1}}\]                 \[{{T}_{2}}=300{{\left( \frac{1}{2} \right)}^{0.4}}\]     \[=227.36\,K\]


You need to login to perform this action.
You will be redirected in 3 sec spinner