The following are the `P-V` diagram for cyclic process for a gas. In which of these processes, heat is not obsorbed by the gas?

Options

A.
B.
C.
D.

Explanation

To solve the question regarding which of the given P-V diagrams for a cyclic process indicates that heat is not absorbed by the gas, we can analyze the characteristics of cyclic processes in thermodynamics.

### Step-by-Step Solution:

1. **Understanding Cyclic Processes**: In a cyclic process, the system (gas) returns to its initial state after completing a cycle. The net change in internal energy over one complete cycle is zero.

2. **Work Done in Cyclic Processes**: The work done by the gas during a cyclic process can be determined by the area enclosed by the P-V diagram. If the area is positive (the process moves in a clockwise direction), the gas does work on the surroundings, and heat is absorbed by the gas.

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