JEE Main & Advanced Physics Thermodynamical Processes JEE PYQ-Thermodynamical Processes

  • question_answer
    Which of the following statements is correct for any thermodynamic system?                           [AIEEE 2004]

    A)  The internal energy changes in all processes

    B)  Internal energy and entropy are state functions

    C)  The change in entropy can never be zero

    D)  The work done in an adiabatic process is always zero

    Correct Answer: B

    Solution :

    [b] Internal energy does not change in isothermal process/The change in entropy AS can be zero for adiabatic process. Work done in adiabatic process may be non-zero. Here, we know that state functions are P, U, S, T, V (S-entropy) and path functions are O, W, so [b] is correct.


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