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KVPY Sample Paper KVPY Stream-SX Model Paper-23

  • question_answer
    The molar heat capacity of a polytropic process \[(P{{V}^{n}})\] is \[C={{C}_{v}}+\frac{R}{10}.\] The value of the polytropic exponent n is:

    A) 11

    B) 10

    C) \[-10\]   

    D) \[-\,9\]

    Correct Answer: D

    Solution :

    For polytropic process
    \[C={{C}_{V}}-\frac{R}{(n-1)}\]            \[\Rightarrow \]\[\frac{R}{10}=-\frac{R}{(n-1)}\]
    \[\therefore \]      \[n=-\,9.\]


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