Question

The p-V diagram of a gas system undergoing cyclic process is shown here. The work done during isobaric compression is

• A. 100 J
• B. 200 J
• C. 600 J
• D. 500 J
• E. 400 J

Answer 1

Answer: (E)

400 J

From P-V diagram, DA is the isobaric compression. Here pressure is constant i.e. $p=2\times {10}^{2}N{m}^{-2}$

Now, work done for DA is $W=pdV=p(V_D-V_A)=(2\times {10}^2)(3-1)=400J$