First slide

Graphs

Question

Starting with the same initial conditions, an ideal gas expands from volume V₁ to V₂ in three different ways. The work done by the gas is W₁, if the process is isothermal W₂, if isobaric and W₃ , if adiabatic, then

Moderate

A

$W_{2} > W_{1} > W_{3}$
B

$W_{2} > W_{3} > W_{1}$
C

$W_{1} > W_{2} > W_{3}$
D

$W_{1} > W_{3} > W_{2}$

Solution

W = Area under $ρ$ -V graph
A₂> A₁> A₃
$∴ W_{2} > W_{1} > W_{3}$

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