A) 5 kJ
B) 25 kJ
C) 15 kJ
D) 20 kJ
Correct Answer: C
Solution :
(c) Process \[l\to 2\] and Process \[3\to 4\] are isochoric processes. |
\[{{W}_{12}}=0,{{W}_{34}}=0,{{W}_{23}}=nR({{T}_{3}}-{{T}_{2}})\]\[=3R(1600-400)\] |
\[{{W}_{41}}=nR({{T}_{1}}-{{T}_{4}})=3R(200-800)=-1800R\] |
\[W=(3600-1800)R=1800R=15kJ\] |
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