If Q, U and W denote respectively the he

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Target Exam

CUET

Subject

Physics

Chapter

Thermodynamics

Question:

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

Options:

Q = 0

W = 0

Q = W = 0

U = 0

Correct Answer:

U = 0

Explanation:

From the 1st law of thermodynamics,

Internal energy for a cyclic process is zero.

Q = U + W

For cyclic process, U = 0,

thus, Q = W \(\neq\) 0