Q. An ideal gas is compressed to half its initial volume by means of several processes. Which of the process results in the maximum work done on the gas?

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Solution:

The diagram of an ideal gas compressed from its initial volume by several processes is shown in the figure.
image
Work done on the gas = Area under curve
As area under the curve is maximum for adiabatic process, so work done on the gas is maximum for adiabatic process.