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Question
In a 2 stage process Q1 = 5 J, Q2 = 10 J, if the change in internal energy in first stage is 10 J and the total change in internal energy is 20 J, what is the work do done in second stage?
Options:
A .  0
B .  5 J
C .  10 J
D .  – 5 J
Answer: Option A
Answer: (a).0

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