JEE Main & Advanced Physics Thermodynamical Processes Question Bank Graphical Questions

  • question_answer
    A system goes from A to B via two processes I and II as shown in figure. If \[\Delta {{U}_{1}}\] and \[\Delta {{U}_{2}}\] are the changes in internal energies in the processes I and II respectively, then [AIEEE 2005]           

    A)            \[\Delta {{U}_{\text{II}}}>\Delta {{U}_{\text{I}}}\]

    B)            \[\Delta {{U}_{\text{II}}}<\Delta {{U}_{\text{I}}}\]

    C)            \[\Delta {{U}_{\text{I}}}=\Delta {{U}_{\text{II}}}\]

    D)            Relation between \[\Delta {{U}_{\text{I}}}\] and \[\Delta {{U}_{\text{II}}}\] can not be determined

    Correct Answer: C

    Solution :

               As internal energy is a point function therefore change in internal energy does not depends upon the path followed i.e. \[\Delta {{U}_{\text{I}}}=\Delta {{U}_{\text{II}}}\]


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