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Partially Inelastic Collision

Two moles of ...

Question

Two moles of an ideal gas expand spontaneously into vacuum. The work done is:

A

zero

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B

2 J

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C

4 J

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D

8 J

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Solution

The correct option is A zero
When a gas expands in vacuum there is no opposing force, $P_{e x t} = 0$
So, work done = 0

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