The magnitude of work done by a gas that undergoes a reversible expansion along the path ABC shown in the figure is ____ Pressure
Answer: 48
Solution
For a reversible change the work is the area under the path on the P-V diagram, and the path ABC encloses a trapezoid. Its area is ∣w∣=21(b1+b2)h=21(6+10)×6=48 J.
JEE Main · 2020 · 08 Jan 2020 · Shift 1 · Integer answer