MHT CET 2024 Physics question

The absolute temperature of a gas is determined by

(A)the average momentum of the molecule
(B)the velocity of sound in the gas
(C)the number of molecules in the gas
(D)the mean square velocity of the moleculesCorrect

Answer: (D)

Solution

According to the kinetic theory, the average translational kinetic energy per molecule is . Thus the absolute temperature is a measure of the mean square velocity:

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Question ID VK-095450