Sir/Mam i want the reason behind this given question(Why)?
Asked by Prag Sangha
| 6th Dec, 2013,
08:25: PM
Expert Answer:
If a gas is expanding, then work is done by the piston against the external pressure.
W = - Pext ΔV
Now, if on the other side of piston vacuum is present, then Pext = 0.
Thus, the work done is also zero.
Answered by Romal Bhansali
| 9th Dec, 2013,
06:44: PM
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