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Question: Answered & Verified by Expert
P - V diagram of an ideal gas is shown. The gas undergoes from initial state A to final state B such that initial and final volumes are same. Select the correct alternative for given process AB .

PhysicsThermodynamicsJEE Main
Options:
  • A Work done by gas is positive
  • B Work done by gas is negative
  • C Temperature of gas increases continuously
  • D Process is isochoric
Solution:
2929 Upvotes Verified Answer
The correct answer is: Work done by gas is negative


Volume does not remain constant throughout the process AB. As T=PVnR, temperature decreases initially as both P and V decreases. By area under curve, net work done is negative.

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