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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2013

  • question_answer
    1 mole of an ideal gas is allowed to expand reversibly and adiabatically from a temperature of\[27{}^\circ C\]. The work done is 3 kJ. The final temperature of the gas is equal to(\[{{C}_{V}}=20\,J\,mo{{l}^{-1}}{{K}^{-1}}\])

    A)  75K                       

    B)  150K

    C)  225 K                   

    D)  300 K

    Correct Answer: B

    Solution :

                    For an adiabaitc expansion, \[w=-n{{C}_{V}}({{T}_{2}}-{{T}_{1}})\] \[3=-1\times \frac{20}{1000}({{T}_{2}}-300)\] \[\therefore \]  \[{{T}_{2}}=150\,K\]


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