NEET Physics Kinetic Theory of Gases NEET PYQ-Kinetic Theory Of Gases

  • question_answer
    The average thermal energy for a mono-atomic gas is : (\[{{k}_{B}}\]is Boltzmann constant and T, absolute temperature)                                                                                                                   [NEET 2020]

    A)  \[\frac{3}{2}{{k}_{B}}T\]       

    B)       \[\frac{5}{2}{{k}_{B}}T\]

    C)  \[\frac{7}{2}{{k}_{B}}T\]       

    D)       \[\frac{1}{2}{{k}_{B}}T\]

    Correct Answer: A

    Solution :

    [a] For monoatomic gases, degree of freedom is 3.
    Hence average thermal energy per molecule is
    \[K{{E}_{avg}}=\frac{3}{2}{{k}_{B}}T\]


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