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A given mass of gas expands from state A...

A given mass of 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

`w_(1) gt w_(2) gt w_(3)`

B

`w_(1)ltw_(2)ltw_(3)`

C

`w_(1)=w_(2)=w_(3)`

D

`w_(1)ltw_(2),w_(1)ltw_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
Work is equal to area under `P-V` graph (when P is plotted along y-axis). As area under graph 3 is maximum and area under graph 1 is minimum, so `w_(3)` is maximum and `w_(1)` is minimum.
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Knowledge Check

  • A system goes from A to B by two different paths in the P-V diagram as shown in figure Heat given to the system in path 1 is 1100 j, the work done by the system along path 1 is more than path 2 by 150 J. The heat exchanged by the system in path 2 is

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    D
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