The velocity of sound in vacuum is __`m s^(-1)`

Options

A. `332 `
B. `330`
C. `3 xx 10^8`
D. Zero

Explanation

To solve the question regarding the velocity of sound in a vacuum, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Sound Waves**:
- Sound waves are classified as mechanical waves. This means they require a medium (solid, liquid, or gas) to travel through.

2. **Defining a Vacuum**:
- A vacuum is defined as a space that is completely empty, meaning it contains no matter or medium.

3. **Medium Requirement for Sound**:
- Since sound waves are mechanical waves, they rely on the presence of a medium to propagate. Without a medium, sound cannot travel.

4. **Conclusion about Sound in Vacuum**:
- In a vacuum, there is no medium available for sound waves to travel through. Therefore, sound cannot propagate in a vacuum.

5. **Determining the Velocity of Sound in Vacuum**:
- Since sound cannot travel in a vacuum, the velocity of sound in vacuum is zero.

6. **Final Answer**:
- Thus, the velocity of sound in vacuum is **0 m/s**.