Home JEE Main - Previous Year Papers JEE MAIN 2019 PAPER 16 A vertical closed cylinder is separated into…
JEE Main - Previous Year Papers JEE MAIN 2019 PAPER 16 Single Correct MCQ
Published on: August 13, 2026

A vertical closed cylinder is separated into two parts by a frictionless piston of mass and of negligible thickness. The piston is free to move along the length of the cylinder. The length of the cylinder above the piston is , and that below the piston is , such that . Each part of the cylinder contains moles of an ideal gas at equal temperature . If the piston is stationary, its mass, , will be given by:

( is universal gas constant and is the acceleration due to gravity)

A
B

C
D

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The correct answer is:
B

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