Question

# A given mass gas expands from state A to state B  by three paths 1,2 and 3 as shown in the figure:If $$w_{1}, w_{2}$$ and $$w_{3}$$ respectively, be the work done by the gas along three paths, then

A
w1>w2>w3
B
w1<w2<w3
C
w1=w2=w3
D
w2<w1<w3

Solution

## The correct option is B $$w_{1} < w_{2} < w_{3}$$Work is equal to the area under the P - V graph (when P is plotted along the y-axis). As the area under graph 3 is maximum and area under graph 1 is minimum, so $$w_{3}$$ is maximum and $$w_1$$ is minimum.$$\therefore w_{1} < w_{2} < w_{3}$$Chemistry

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