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NEET Sample Paper NEET Sample Test Paper-26

  • question_answer
    An ideal gas is taken through cycle \[A\to B\to C\to A\]as shown in figure. If the net heat supplied to the gas is 10 J, then the work done by the gas in process \[B\to C\]is:

    A)  \[-10J\]        

    B)  \[-30J\]

    C)  \[-15J\]                       

    D)  \[20J\]

    Correct Answer: A

    Solution :

    Heat involved in the process \[\Delta Q={{W}_{AB}}+{{W}_{BC}}+{{W}_{CA}}+\Delta U,\] (\[\Delta U=0\] for the complete cycle) \[\Rightarrow \]               \[10\times (3-1)+{{W}_{BC}}+0=10J\]                 \[{{W}_{BC}}=-10J\]


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