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MHT CET Physics question

PhysicsKinetic Theory of GasesMHT CET

An ideal gas () is expanded adiabatically. How many times has the gas to be expanded to reduce r. m. s. velocity of molecules two times? [MHT-CET 2022]

Answer: (B)

Solution

, so halving it makes ; from constant,

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Question ID VK-066052