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Punjab Medical Punjab - MET Solved Paper-2007

  • question_answer
    When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases, the internal energy of the gas, is

    A) \[\frac{2}{5}\]                                   

    B) \[\frac{3}{5}\]

    C) \[\frac{3}{7}\]                                   

    D) \[\frac{5}{7}\]

    Correct Answer: D

    Solution :

    Fraction of supplied energy which increases the internal energy is given by                 \[f=\frac{\Delta U}{(\Delta Q)P}=\frac{(\Delta Q)V}{(\Delta Q)P}\]                     \[=\frac{\mu {{C}_{V}}\Delta T}{\mu {{C}_{p}}\Delta T}=\frac{1}{\gamma }\]


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