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JEE Main & Advanced Sample Paper JEE Main Sample Paper-11

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

    A)  2/5                       

    B)  3/5

    C)  3/7                       

    D)  5/7

    Correct Answer: B

    Solution :

     \[\Delta Q=-\frac{f}{2}nRT+nRT=\frac{3}{2}nRT+nRT=\frac{5}{2}nRT\] \[\therefore \]Fraction\[=\frac{(3/2)nRT}{(5/2)nRT}=\frac{3}{5}\]


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