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AMU Medical AMU Solved Paper-2001

  • question_answer
    An ideal monoatomic gas is taken round the cycle ABCDA as shown in the figure. The work done during the cycle is

    A)  zero                                     

    B) \[\frac{pV}{2}\]

    C) \[2pV\]                

    D) \[pV\]

    Correct Answer: D

    Solution :

                     In a thermodynamic process, work done (W) is given by \[W=p\Delta V\] where p is pressure, \[\Delta V\] the change in volume. In a p-V graph, work done is equal to  area under p-V curve. \[\therefore \] W = area of rectangle ABCD                 \[=p\,(2V-V)=pV\]


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