Question

In P-V diagram shown in figure ABC is a semicircle. The work done in the process ABC is

• A. 4 J
• B. $\frac{-\pi }{2}$ J
• C. $\frac{\pi }{2}$ J
• D. zero

Answer 1

Answer: (C)

$W=\frac{r^2}{2}=\frac{\pi \times 1\times 1}{2}=\pi /2J\left[\because r=1\right]$