Question

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

• A. More in the isothermal process
• B. More in the adiabatic process
• C. Equal in both processes
• D. Dependent on atomicity of gas

Answer 1

The correct option is A More in the isothermal process

In thermodynamic processes,
work done = Area covered under $PV$ curve
As the curve of isothermal lies above the adiabatic curve it is clear that $(Area{)}_{iso}>(Area{)}_{adi}so,W_{iso}>W_{adi}$