A) 100 J
B) - 100 J
C) 500 J
D) - 700 J
Correct Answer: D
Solution :
The net heat involved is equal to \[Q={{Q}_{1}}+{{Q}_{2}}+ & {{Q}_{3}}+{{Q}_{4}}=100+300-400-100\] \[=-100\] The net work done is equal to \[W={{W}_{1}}+{{W}_{2}}+{{W}_{3}}+{{W}_{4}}\] \[=300-100+400+{{W}_{4}}=600+{{W}_{4}}\] Assuming no heat loss, \[Q=W\] \[\Rightarrow \] \[{{W}_{4}}=-100-600=-700\,J\]You need to login to perform this action.
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