A) 560 J
B) 800 J
C) 600 J
D) 640 J
Correct Answer: A
Solution :
Since AB is isochoric process, so no work is done, i.e., \[{{W}_{AB}}=0\] BC is isobaric process \[{{W}_{BC}}={{P}_{B}}({{V}_{D}}-{{V}_{A}})=240J\] Therefore, \[\Delta Q = 600 + 200 = 800 J\] Using \[\Delta Q=\,\,\Delta U+\Delta W\] \[\Rightarrow \,\,\,\,\Delta U=\,\,\Delta Q-\Delta W\,\,=\,\,800-\,\,240\,\,=\,\,560\,J\]You need to login to perform this action.
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