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The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible path and returns to state A by an irreversible path what would be the net change in internal energy
[AIEEE-2003]
  • a)
    < 40 kJ
  • b)
    Zero 
  • c)
    40 kJ
  • d)
    > 40 kJ
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The internal energy change when a system goes from state A to B is 40 ...

We know that for a cyclic process the net change in internal energy is equal to zero and change in the internal energy does not depend on the path by which the final state is reached.
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