A) increases by 250 J
B) decreases by 250 J
C) increases by 50 J
D) decreases by 50 J
Correct Answer: A
Solution :
As we know,\[\Delta Q=\Delta u+\Delta w\] (Ist law of thermodynamics) \[\Rightarrow \]\[\Delta Q=\Delta u+P\Delta v\]or\[150=\Delta u+100(1-2)\] \[=\Delta u-100\] \[\therefore \]\[\Delta u=150+100=250J\] Thus the internal energy of the gas increases by 250 JYou need to login to perform this action.
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