Two identical containers A and B with frictionless pistons contain the same ideal gas at…

Physics · JEE Advanced · NTA ExamsKinetic Theory of Gases

Two identical containers A and B with frictionless pistons contain the same ideal gas at the same temperature and the same volume V. The mass of the gas in A is mA, and that in B is mB. The gas in each cylinder is now allowed to expand isothermally to the same final volume 2V. The changes in the pressure in A and B are found to be ΔP and 1.5 ΔP respectively. Then
  1. 4mA = 9mB
  2. 2mA = 3mB
  3. 3mA = 2mB
  4. 9mA = 4mB.

Answer

(A) 4 m A = 9 m B

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