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

  • question_answer
    Heat given to a system is 35 joules and work done by the system is 15 joules. The change in the internal energy of the system will be                                                     [MP PET/PMT 1988]

    A)            ? 50 J                                       

    B)            20 J

    C)            30 J

    D)            50 J

    Correct Answer: B

    Solution :

               \[\Delta U=\Delta Q-W=35-15=20\ J\]


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