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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 `therefore Q=0`
`therefore DeltaU=W=-P_("ext")=-P_("ext")DeltaV`
`=-8"atm L"`
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