Question

An ideal monoatomic gas is taken round the cycle ABCA as shown in the Fig. 17.9 The work done during the cycle is

• A. zero
• B. 3 PV
• C. 6 PV
• D. 9 PV

Answer 1

The correct option is B

3 PV

Work done = area enclosed by the indicator diagram ABC
$=\frac{1}{2}\times BC\times AC=\frac{1}{2}\times (4P-P)\times (3V-V)=3PV$