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A frictionless piston-cylinder based enc...

A frictionless piston-cylinder based enclosure contains some amount of gas at a pressure of 400 kPa. Then heat is transferred to the gas at constant pressure in a quasi-static process. The piston moves up slowly through a height of 10 cm. If the piston has a cross-section area of 0.3 `m^2`, the work done by the gas in this process is

A

6 kJ

B

12 kJ

C

7.5 kJ

D

24 kJ

Text Solution

Verified by Experts

The correct Answer is:
B
P = constant
`W = P DeltaV=400xx10^3` (Ah)
= `400xx10^3xx0.3xx10xx10^(-2)` = 12 kJ.
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