The distance in which one compression and one rarefaction are contained is called

Options

A. amplitude
B. displacement
C. wavelength
D. none of these

Explanation

To solve the question, "The distance in which one compression and one rarefaction are contained is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concepts**:
- In a longitudinal wave, there are areas of compression and rarefaction.
- Compression is where particles are close together, while rarefaction is where particles are spread apart.

2. **Identify the Parts of the Wave**:
- In a longitudinal wave, the compression can be thought of as a crest, and the rarefaction can be thought of as a trough.
- The distance between one compression and the next compression, or one rarefaction and the next rarefaction, is known as the wavelength.

3. **Define Wavelength**:
- Wavelength is defined as the distance between two consecutive points that are in phase on a wave. In the case of longitudinal waves, this includes the distance from one compression to the next compression or from one rarefaction to the next rarefaction.

4. **Answer the Question**:
- Since the question specifically asks for the distance that includes one compression and one rarefaction, we can conclude that this distance is also referred to as the wavelength.

5. **Final Conclusion**:
- Therefore, the distance in which one compression and one rarefaction are contained is called the **wavelength**.