An ideal gas undergoes a cyclic transformation starting from the point $A$ and coming back to the same point by tracing the path $A \to B \to C \to A$ as shown in the diagram. The total work done in the process is _____ $J$ .

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TestHub · Accepted Answer

Work done is given by area enclosed in the $P vs V$ cyclic graph or $V vs P$ cyclic graph

Sign of work is positive for clockwise cyclic process for $V vs P$ graph.

Work done in cyclic process = area inside the figure

$W = \frac{1}{2} \times (30 - 10) \times (30 - 10) = 200 kPa - {dm}^{3}$

$= 200 \times 1000 Pa - L = 2 L - bar = 200 J$

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