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Question: Answered & Verified by Expert
An ideal gas is expanding such that PT2 = constant. The coefficient of volume expansion of the gas is
PhysicsThermodynamicsNEET
Options:
  • A 1T
  • B 2T
  • C 3T
  • D 4T
Solution:
1035 Upvotes Verified Answer
The correct answer is: 3T
PT2=constant

∴  nRTVT2=constant


or,T3V-1=constant

Differentiating the equation, we get

3T2V·dT-T3V2dV=0

or,   3dT=TV·dV ..........(i)

From the equation,dV=VγdT

γ=Coefficient of volume expansion of gas=dVV·dT

From Eq.(i)  γ=dVV·dT=3T

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