Question

Choose the correct option

• A. Sound cannot travel in vacuum
• B. Sound is a mechanical wave and propagates as an oscillation of particles through the medium. So they cannot travel in vacuum.

Answer 1

Answer: (A), (B)

Sound is a mechanical wave and propagates as an oscillation of particles through the medium. So they cannot travel in vacuum.

The explanation for the correct answer:

In the case of option A,

1. We know sound is a mechanical wave because it can be produced mechanically and heard in mediums such as solids, liquids, and gases.
2. However, because mechanical waves cannot propagate in a vacuum, sound does not travel in a vacuum, unlike light, because the light is electromagnetic radiation and the sound wave is a mechanical wave.
3. In a vacuum, sound cannot travel.
4. This is correct since mechanical waves cannot travel in a vacuum.
5. Mechanical waves are the oscillations of particles that transport energy across the medium.

In the case of option B,

1. Sound is a mechanical wave that travels through the medium as an oscillation of particles.
2. They cannot travel in a vacuum.
3. Sound is a mechanical wave, which is correct because mechanical waves are formed mechanically and travel due to particle vibration in the medium.
4. As a result, sound moves in a medium and cannot pass through the vacuum.

Therefore, both the options are correct.4ecb8T