First slide

Work done by gas

Question

In the cyclic process as shown is the figure. The work done by the gas in one cyclic process is

Easy

A

9 PV
B

28 PV
C

18 PV
D

14 PV

Solution

$\begin{aligned} W & = \frac{1}{2} \times (4 V - V) \times (7 P - P) \\ = \frac{1}{2} \times 3 V \times 6 P \\ = 9 PV \end{aligned}$

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