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Question

For a cyclic process, the work done by the system is -500 J. The amount of heat gained by the system is 500 J. What is the change in the internal energy?

A
0 J
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B
500 J
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C
-500 J
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D
1000 J
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Solution

The correct option is A 0 J
For cyclic process, internal energy change ΔU=0 internal energy is a state function. Hence, in a cyclic process, where initial and final states are same, the initial and final internal energies are same.

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