JEE Main & Advanced Sample Paper JEE Main Sample Paper-40

  • question_answer
    The figure shows a process on a gas in which pressure and volume both change. The molar heat capacity for this process is C. Then

    A) \[C=0\]                       

    B) \[C={{C}_{v}}\]

    C) \[C>{{C}_{v}}\]                  

    D) \[C<{{C}_{v}}\]

    Correct Answer: C

    Solution :

    According to graph, pressure is increasing, also volume is increasing hence T also increases. It means that energy is used both in increasing internal energy and work done \[nCdt=n{{C}_{v}}dt+P\Delta V\] \[\therefore \]\[C>{{C}_{v}}\]


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