JEE Advanced 2020 Full Test 7 Paper 2

Question : 7 of 54

Marks: +1, -0

A thermally insulated chamber of volume 2V0 is divided by a frictionless piston of area S into two equal parts A and B. Part A has an ideal gas at pressure P0 and temperature T0 and in part B is vacuum. A massless spring of force constant k is connected with piston and the wall of the container as shown. Initially spring is unstretched. Gas in chamber A is allowed to expand. Let in equilibrium spring is compressed by x0. Then -

final pressure of the gas is ‌
kx0
S
work done by the gas is ‌
1
2
kx02
change in internal energy of the gas is ‌
1
2
kx02
temperature of the gas is decreased

Validate

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