Work done in an isothermal reversible expansion of an ideal gas is greater than in an irreversible isothermal expansion between the same initial and final states.
Reason (R) In reversible process, the system reaches equilibrium at each step, allowing for the maximum work output, whereas irreversible process results in less work due to deviations from equilibrium.
Both A and R are true and R is the correct explanation of A .

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.