Rankers Physics
Topic: Thermal Physics

A sample of gas expands from volume $V_1$ to $V_2$. The amount of work done by the gas is greatest, when the expansion is: (1997)
Adiabatic
Equal in all cases
Isothermal
Isobaric

Solution:

On a $P-V$ diagram, the work done is represented by the area under the curve. For the same expansion volume, isobaric expansion maintains the highest pressure throughout, resulting in the maximum area and work done.

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