Two identical samples of a gas are allowed to expand $(i)$ isothermally $(ii)$ adiabatically. Work done is
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(a) In thermodynamic processes.
Work done = Area covered by $PV$ diagram with $V-$axis
From graph it is clear that ${({\rm{Area}})_{iso}} > {({\rm{Area}})_{adi}}$
$\Rightarrow$  ${W_{iso}} > {W_{adi}}$
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