CBSE Class 11-science Answered
Sir/Mam i want the reason behind this given question(Why)?
Asked by Prag Sangha | 06 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 | 09 Dec, 2013, 06:44: PM
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