First slide

Work done by gas

Question

A given mass of a gas expands from the state A to the state B by three paths 1, 2 and 3 as shown in fig.
lf W₁,W₂and W₃ respectively be the work done by the gas along the three paths, then

Easy

A

$W_{1} > W_{2} > W_{3}$
B

$W_{1} < W_{2} < W_{3}$
C

$W_{1} = W_{2} = W_{3}$
D

$W_{1} < W_{2} and W_{1} > W_{3}$

Solution

Work done = area under the curve
Here $A_{3} > A_{2} > A_{1}$ or $W_{1} < W_{2} < W_{3}$

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