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MHT CET 2022 Physics question

PhysicsKinetic Theory of GasesMHT CET 2022

In an adiabatic expansion of a gas initial and final temperatures are and respectively then the change in internal energy of the gas is [R = gas constant, = adiabatic ratio]

Answer: (C)

Solution

For one mole of an ideal gas, and the internal energy depends only on temperature: . In an adiabatic expansion the gas cools (), so

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Question ID VK-093775