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JEE Main & Advanced Physics Thermodynamical Processes Question Bank Graphical Questions

  • question_answer
    The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from \[A\to B\to C\]is 30J and 40J heat is given to the system. The change in internal energy between A and C is                                                                          [BCECE 2005]

    A)            10 J

    B)            70 J

    C)            84 J

    D)            134 J

    Correct Answer: A

    Solution :

                       Heat given DQ = 40 J and Work done DW = 30 J Þ DU = DQ ? DW = 40 ? 30 = 10 J.


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