Question

Sound waves travel fastest in

• A. Air
• B. Metals
• C. Vacuum
• D. Liquids

Answer 1

The correct option is B

Metals

1. As we already know, sound travels in the form of waves that propagate through the medium in the form of vibrations.
2. The medium in which the individual particles are close to each other, the vibrations will be transferred faster to the neighbouring particles.
3. As solids have closely packed arrangement, the speed of sound will be highest in solids.
4. Gases have loosely packed arrangement, the speed of sound will be least in gases.
5. Vacuum doesn't have any particles. So, speed will be the least in a vacuum.
6. So, the speed of sound is highest in metals.

Therefore, option B is correct.