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MHT CET Physics question

PhysicsThermodynamicsMHT CET

A given mass of a gas is compressed isothermally until its pressure is doubled. It is then allowed to expand adiabatically until its original volume is restored and its pressure is then found to be 0.75 of its initial pressure. The ratio of the specific heat of the gas is approximately

Answer: (B)

Solution

After isothermal compression , ; adiabatic expansion back to gives 75p_0$ =

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Question ID VK-066026