1.

An ideal gas undergoes cyclic process ACBC as shown is given PV diagram The amount of work done by the gas is

Answer»

`6Po Vo`
`-2Po Vo`
`+2Po Vo`
`+4 PO Vo`

Solution :Work done by the gas is EQUAL to AREA of rectangle ABCDAfig.
`=AB xxBC`
`=(2VO)Po = 2 PoVo`
As the TRACE is anticlockwise, the work is done on the gas. Work done by the gas = –2PoVo


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