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NEET 2020 (Phase 1) · Gas Laws & Ideal Gas Equation

Gas Laws & Ideal Gas Equation question from NEET 2020 (Phase 1)

Q64NEET 2020 · PHASE 1Easy

Gas Laws & Ideal Gas Equation

The average thermal energy for a mono-atomic gas is: (kB is Boltzmann constant and T absolute temperature)

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Answer: (a)

A monoatomic molecule has 3 translational degrees of freedom, each with energy $\frac{1}{2}k_BT$ .
Average energy $= 3 \times \frac{1}{2}k_BT = \frac{3}{2}k_BT$
So the answer is (a) $\frac{3}{2}k_BT$ .

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