Question

In a cyclic process, work done by the system is

• A. more than the heat given to the system.
• B. equal to the heat given to the system.
• C. zero.
• D. independent of the heat given to the system.

Hint:

In a cycle the system returns to its starting state, so the net change in internal energy is zero.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
First law: \(\Delta Q=\Delta U+W\).

Step 2: Cyclic process
The initial and final states are the same, so \(\Delta U=0\).

Step 3: Result
Then \(W=\Delta Q\): the net work done equals the net heat given to the system.

Final Answer:
Work done equals the heat given to the system. \[ \boxed{\text{(B) }\text{equal to the heat given to the system.}} \]