One mole of a monoatomic gas and one mole of a diatomic gas are initially in the same state. Both gases are expanded isothermally and then adiabatically, such that they acquire the same final state. Choose the correct statement.

Step-by-step solution

Expansion curves are as shown below. As, slope of an adiabatic curve = - γ p V Also, γ diatomic = 7 5 γ monoatomic = 5 3 So, adiabatic expansion will be more steep for monoatomic gas, whereas isotherms for both gases are nearly same. As, work done = area under p - V graph ∴ Work done is more for diatomic gas.