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JEE Main 2020 Physics question

PhysicsKinetic Theory of GasesJEE Main 2020

Under an adiabatic process, the volume of an ideal gas gets doubled. Consequently the mean collision time between the gas molecule changes from to . If for this gas then a good estimate for is given by -

Answer: (A)

Solution

The paper lists this as BONUS (NTA answer is option 1). Using τ ∝ V/√T and TV^(γ−1) = constant gives

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Question ID VK-010847