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Question
An ideal gas expands in volume from 10−3m3 to 10−2m3 at 300K against a constant pressure at 105N/m2. The work done is:
An ideal gas expands in volume from 10−3m3 to 10−2m3 at 300K against a constant pressure at 105N/m2. The work done is:
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Solution
The correct option is C −900J
As we know that, work done due to change in volume against constant pressure is given as-
W=−Pext.ΔV
Given:-
Vi=10−3m3
Vf=10−2m3
Pext.=105N/m2
∴W=−105(10−2−10−3)=−900J
Hence, the correct option is A
As we know that, work done due to change in volume against constant pressure is given as-
W=−Pext.ΔV
Given:-
Vi=10−3m3
Vf=10−2m3
Pext.=105N/m2
∴W=−105(10−2−10−3)=−900J
Hence, the correct option is A
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