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One monoatomic gas is expanded adibatica...

One monoatomic gas is expanded adibatically from `2L` to `10L` at atm external pressure find `DeltaU` (in atm `L`)?

A

`-8`

B

`0`

C

`-66.7`

D

`58.2`

Text Solution

Verified by Experts

The correct Answer is:
A
Process is adiabatic
`:. Q=0`
`:. DeltaU=W=-P_(ext)DeltaV`
`=-1(10-2)atmL`
`=-8atmL`
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