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JEE Main & Advanced Physics Thermodynamical Processes Question Bank First Law of Thermodynamics

  • question_answer
    A thermo-dynamical system is changed from state \[({{P}_{1}},\,{{V}_{1}})\] to \[({{P}_{2}},\,{{V}_{2}})\] by two different process. The quantity which will remain same will be                                   [RPET 1999]

    A)            \[\Delta \,Q\]                      

    B)            \[\Delta \,W\]

    C)            \[\Delta Q+\Delta W\]     

    D)            \[\Delta Q-\Delta W\]

    Correct Answer: D

    Solution :

               Change in internal energy does not depend upon path so \[\Delta U=\Delta Q-\Delta W\] remain constant.


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