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Find work done by the gas in the process...

Find work done by the gas in the process shown in figure.

A

`(5)/(2)pi atm L`

B

`(5)/(2)atm L`

C

`-(3)/(2)pi atmL`

D

`-(5)/(4)pi atm L`

Text Solution

Verified by Experts

The correct Answer is:
D
Work done by gas =Area under `P-V` diagram
`= (pi(3-4)(4-2))/(2)+(pi(2-1)(3-2.5))/(2)`
`= (2.5pi)/(2) = (5pi)/(4) atmL`
`W =- ((5pi)/(4))atmL`
(Work done by gas is negative as cycle is anticlockwise)
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