Question

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

Options

• more in the isothermal process

• more in the adiabatic process

• less in isothermal process

• equal in both processes

Answer 1

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

Explanation:

In thermodynamic processes, Work done = Area enclosed by P-V diagram and V-axis.

From graph, it is clear that (Area)_iso > (Area)_adi or W_iso > W_adi