Physics Question on Laws of thermodynamics

Question

A thermodynamic system is taken from an original state D to an intermediate state E by the linear process shown in the figure. Its volume is then reduced to the original volume from E to F by an isobaric process. The total work done by the gas from D to E to F will be

A thermodynamic system is taken from an original state D to an intermediate state

Answer 1

Solution

The total work done by the gas from D to E to F ,
W= $\frac{1}{2}$ ×(5−2)×(600–300) J
= $\frac{1}{2}$ ×3×300=450J
So, the correct option is (B): 450 J.