First slide

Work done by gas

Question

A given mass of a gas expands from the state A to B by the three paths 1, 2 and 3. If W₁, W₂ and W₃ respectively be the work done in three paths, then

Easy

A

W₁ > W₂ > W₃
B

W₁<W₂ < W₃
C

W₁ = W₂ = W₃
D

W₁ < W₂ and W₁> W₃

Solution

W = work done by a gas
= Area under P – V diagram.
From the given diagram, it is clear that W₃ > W₂ > W₁

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