Question

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

• A. More in the isothermal process
• B. More in the adiabatic process
• C. Neither of them
• D. Equal in both processes

Answer 1

Answer: (A)

More in the isothermal process

Answer 2

In thermodynamic processes.

Work done = Area covered by PV diagram with V-axis

From graph it is clear that $(\text{Area})_{iso} > (\text{Area})_{adi}$

⇒ $W_{iso} > W_{adi}$