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NEET Sample Paper NEET Sample Test Paper-24

  • question_answer
    A thermodynamic system is taken through the cycle ABCD as shown in the figure. Heat rejected by the gas during the cycle is

    A)  PV                              

    B)  2 PV

    C)  4 PV                           

    D)  \[{\scriptstyle{}^{1}/{}_{2}}PV\]

    Correct Answer: B

    Solution :

     From the first law of thermodynamics \[\Delta Q=\Delta U+\Delta W\] For cyclic process \[\Delta U=0\] Hence Q = W Work done W= area under P-V diagram \[\Rightarrow \]\[Q=-2PV\]


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