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  4. An ideal gas expands along the path AB as shown in the p-V diagram. The work done is

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Q. An ideal gas expands along the path $AB$ as shown in the $p-V$ diagram. The work done isPhysics Question Image

ManipalManipal 2010Thermodynamics

Solution:

Work done = area of trapezium
$=\frac{1}{2} \times\left(8 \times 10^{5}+4 \times 10^{5}\right) \times 0.2$
$=1.2 \times 10^{5} J$