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JEE Main & Advanced Physics Kinetic Theory of Gases Question Bank Mock Test - Kinetic Theory of Gases and Laws of Thermodynamics

  • question_answer
    Energy of all molecules of a monatomic gas having a volume \[F\] and pressure \[p\] is 3/2\[P\]\[V\]. The total translational kinetic energy of all molecules of a diatomic gas at the same volume and pressure is

    A) \[1/2\,PV\]        

    B) \[3/2\,PV\]

    C) \[5/2\,PV\]       

    D) \[3\,PV\]

    Correct Answer: B

    Solution :

    [b] Energy of mol of gas \[=\frac{f}{2}RT=\frac{f}{2}PV\] Where f= degree of freedom Monatomic or diatomic gases possess equal degree of freedom for diatomic and that is equal to 3, i.e., f=3 \[\therefore E=\frac{3}{2}PV\]


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