NTA Abhyas JEE Main2020PhysicsThermodynamicsPractice
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 A B .
Options
- AWork done by gas is positive
- BWork done by gas is negative
- CTemperature of gas increases continuously
- DProcess is isochoric
Correct answer
B. Work done by gas is negative
Step-by-step solution
Volume does not remain constant throughout the process A B . As T = P V n R , temperature decreases initially as both P and V decreases. By area under curve, net work done is negative.