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JEE Main & Advanced Physics Thermodynamical Processes Question Bank Isobaric and Isochoric Processes

  • question_answer
    A Container having 1 mole of a gas at a temperature 27°C has a movable piston which maintains at constant pressure in container of 1 atm. The gas is compressed until temperature becomes 127°C. The work done is (Cp for gas is 7.03 cal/mol?K)                                                 [DCE 2005]

    A)            703 J                                        

    B)            814 J

    C)            121 J                                        

    D)            2035 J

    Correct Answer: B

    Solution :

                       At constant pressure            \[W=P\Delta V=\mu R\Delta T\]\[=1\times 8.31\times 100\]\[=831\approx 814J\]


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