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11.Thermodynamics
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The $P-V$ diagram shows seven curved paths (connected by vertical paths) that can be followed by a gas. Which two of them should be parts of a closed cycle if the net work done by the gas is to be at its maximum value

A
$ac$
B
$cg$
C
$af$
D
$cd$
Solution
(c) Area enclosed between $a$ and $f$ is maximum. So work done in closed cycles follows $a$ and $f$ is maximum.
Standard 11
Physics
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