Question

A Sample of ideal monatomic gas is taken round the cycle ABCA as shown in the figure. The work done during the cycle is

• A. Zero
• B. 3PV
• C. 6PV
• D. 9PV

Answer 1

The correct option is B 3PV

Work done is given by the area enclosed by the three steps; i.e. the area of the triangle.
$W=\frac{1}{2}(3V-V)(4P-P)=0.5\left(2V\right)\left(3P\right)=3PV$
Option B.