1.

A gas expands from a volume of 1 m^(3) to a volume of 2m^(3) against an external pressure of 10^(5) N m^(-2) . The work done by the gas will be

Answer»

`10^(5) KJ`
`10^(2) kJ`
`10^(2) J`
`10^(3) J`

Solution :Work DONE, `w = - p. Delta V`
`= - 10^(5) Nm^(-2) (2 - 1) m^(3)`
`= - 10^(5) N - m`
`= - 10^(5) J or - 10^(2) kJ`


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