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NEET NEET SOLVED PAPER 2016 Phase-II

  • question_answer
    For a sample of perfect gas when its pressure is changed isothermally from \[{{p}_{1}}to\text{ }{{p}_{2}}\], the entropy change is given by

    A)  \[\Delta S=nrIn\left( \frac{Pf}{Pi} \right)\]

    B)  \[\Delta S=nrIn\left( \frac{Pi}{Pf} \right)\]

    C)  \[\Delta S=nrTIn\left( \frac{Pf}{Pi} \right)\]         

    D)  \[\Delta S=RTIn\left( \frac{Pi}{Pf} \right)\]

    Correct Answer: B

    Solution :

    \[\Delta S=nR\ln \left( \frac{Pi}{Pf} \right)\]


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