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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 400kPa. Then heat is transferred to the gas at constant pressure in a quasi-static process. The piston moves up slowly through a height of 10cm. If the piston has a cross-sectional area of `0.3m^(2)`, the work done by the gas in this process is

A

6kJ

B

12kJ

C

7.5 kJ

D

24 kJ

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