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What is the correct answer?
4
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is
A.
-140 kJ
B.
-80 kJ
C.
-40 kJ
D.
+60 kJ
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