Question

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

• A. Zero
• B. $\frac { \pi } { 2 }$atm-L
• C. – $\frac { \pi } { 2 }$ atm-L
• D. 4 atm-L

Answer 1

Answer: (B)

$\frac { \pi } { 2 }$atm-L

Answer 2

Work done )

= $\frac { \pi r _ { 1 } r _ { 2 } } { 2 }$ = $\frac { \pi } { 2 }$ ×1 × 1 atm-litre

= $\frac { \pi } { 2 }$ atm –litre