WBJEE 2013 Physics Solved Paper

A frictionless piston-cylinder based enclosure contains some amount of gas at a pressure of 400 kPa. Then heat istransferred to the gas at constant pressure in a quasi-sta ic process. The piston moves up slowly through a height of10cm. If the piston has a cross-section area of 0.3 m2, the work done by the gas in this process is