First slide

Thermodynamic processes

Question

Two identical samples of a gas are allowed to expand (i) isothermally (ii) adiabatically. Work done is

Moderate

A

More in the isothermal process
B

More in the adiabatic process
C

Neither of them
D

Equal in both processes

Solution

In thermodynamic processes.
Work done = Area covered by PV diagram with V-axis
From graph it is clear that ${(Area)}_{iso} > {(Area)}_{adi}$
$\Rightarrow W_{iso} > W_{adi}$

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