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MHT CET Physics question

PhysicsThermodynamicsMHT CET

A monoatomic ideal gas initially at temperature is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature by releasing the piston suddenly. and are the lengths of the gas columns before and after the expansion respectively. Then is [MHT-CET 2021]

Answer: (B)

Solution

Volume is proportional to length, and constant with gives

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Question ID VK-066068