Blowing air with open mouth is an example of

Options

A. Isochoric process
B. Isobaric process
C. Isothermal process
D. Adiabatic process

Answer

To solve the question "Blowing air with an open mouth is an example of," we need to analyze the situation based on the definitions of the thermodynamic processes provided in the options.

### Step-by-Step Solution:

1. **Understanding the Scenario**: When we blow air with an open mouth, we are expelling air from our mouth into the surrounding atmosphere.

2. **Identifying the Conditions**:
- The air inside our mouth is at a certain pressure when we blow it out.
- The air outside our mouth is at atmospheric pressure.

3. **Pressure Comparison**:
- Since our mouth is open, the pressure of the air inside our mouth (P1) and the pressure of the air outside (P2) equalize to the atmospheric pressure (P0). Thus, P1 = P2 = P0.

4. **Defining the Process**:
- In thermodynamics, an **isobaric process** is defined as a process that occurs at constant pressure. Since the pressure remains constant (equal to atmospheric pressure) during the act of blowing air, this qualifies as an isobaric process.

5. **Conclusion**: Therefore, the correct answer to the question is that blowing air with an open mouth is an example of an **isobaric process**.

### Final Answer:
Blowing air with an open mouth is an example of an **isobaric process**.

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