Question

A system goes from A to B via two processes I and II as shown in figure. If ΔU₁ and ΔU₂ are the changes in internal energies in the processes I and II respectively, then

(a) ΔU₂ > ΔU₁ (b) ΔU₂ < ΔU₂
(c) ΔU₁ = ΔU₂
(d) relation between ΔU₁ and ΔU₂ can not be
determined

Answer 1

(c) ΔU₁ = ΔU₂ : because the change in internal energy depends only upon the initial and final states A and B.