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A litre of dry air at STP expands isothe...

A litre of dry air at STP expands isothermally to a volume of 3 litres. The work done by air is : `(l n beta=1.1)` [Take air to be an ideal gas]

A

`111.1J`

B

`221.1J`

C

`321.1J`

D

`411.1J`

Text Solution

Verified by Experts

The correct Answer is:
A
`W= n RT_(0)l n3`
`= P_(0) V _(0) l n 3J " "= 1.01 xx 10^(5) xx 10 ^(-3)xx ln 3J`
`=101xx1.1J" "=111.1J`
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