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(A) The work done $(W)$ by the system during a reversible expansion is equal to the area under the $P-V$ curve. Comparing the areas under the curves f

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isobaric $>$ isothermal $>$ adiabatic

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(A) The work done $(W)$ by the system during a reversible expansion is equal to the area under the $P-V$ curve. Comparing the areas under the curves for the three processes from the same initial state $(V_i)$ to the same final volume $(V_f)$: $1$. The isobaric process follows a horizontal line at constant pressure,resulting in the largest area under the curve. $2$. The isothermal process follows a curve that lies below the isobaric line but above the adiabatic curve. $3$. The adiabatic process follows a steeper curve,resulting in the smallest area under the curve. Therefore,the order of work done is: $W_{	ext{isobaric}} > W_{	ext{isothermal}} > W_{	ext{adiabatic}}$.

$A$ gas is reversibly expanded from the same initial state to the same final volume using isobaric,isothermal,and adiabatic processes. The correct order of the work done by the system on the surroundings in the three different methods is

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