According to the kinetic theory of gases,

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(D) According to the kinetic theory of gases,the mean translational kinetic energy $(K.E.)$ of gas molecules is given by the formula:$K.E. = \frac{3}{

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The mean translational $K.E.$ of a diatomic gas increases with an increase in absolute temperature.

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(D) According to the kinetic theory of gases,the mean translational kinetic energy $(K.E.)$ of gas molecules is given by the formula:$K.E. = \frac{3}{2} k_B T$where $k_B$ is the Boltzmann constant and $T$ is the absolute temperature.This equation shows that the mean translational kinetic energy is directly proportional to the absolute temperature $(K.E. \propto T)$.Therefore,as the absolute temperature increases,the mean translational kinetic energy of the gas molecules also increases,regardless of whether the gas is monatomic or diatomic.

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