First slide

Work done by gas

Question

In the indicator diagram shown in fig. the net amount of work done is

Moderate

A

negative
B

positive
C

zero
D

infinity

Solution

It is obvious from fig. that process 1 is clockwise, there{ore W₁ is positive. On the other hand, process 2 is anticlockwise and work done W₂, is negative. As W₂ >W₁
and hence net work done is negative.

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