NEET 2008 Physics question

If , and denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

(1)
(2)
(3)
(4)Correct

Answer: (4)

Solution

First law: , where is the change in internal energy. Internal energy is a state function. In a closed cycle the system returns to its initial state, so , option (4).

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Question ID VK-089948