Velocity of sound in air is 332 `ms^-1`. Its velocity in vacuum will be

Options

A. `gt332ms^-1`
B. `=332ms^-1`
C. `lt332ms^-1`
D. meaningless

Answer

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

### Step-by-Step Solution:

1. **Understanding Sound as a Mechanical Wave**:
- Sound is classified as a mechanical wave. This means it requires a medium (like air, water, or solids) to propagate.

2. **Given Information**:
- The velocity of sound in air is provided as 332 m/s.

3. **Velocity of Sound in Different Mediums**:
- The velocity of sound varies depending on the medium. In air, it is 332 m/s, but in other mediums like water or steel, it can be significantly higher.

4. **Sound in a Vacuum**:
- A vacuum is defined as a space devoid of matter. Since sound needs a medium to travel, it cannot propagate in a vacuum.

5. **Conclusion**:
- Since sound cannot travel in a vacuum, it is meaningless to discuss its velocity in that context. Therefore, the answer to the question is that the velocity of sound in a vacuum is meaningless.

### Final Answer:
- The velocity of sound in vacuum is **meaningless**.