Question

In which of the following media, will sound travel the fastest?

• A. Solids
• B. Liquids
• C. gases
• D. None

Answer 1

The correct option is A

Solids

1. Speed of sound in a medium depends upon the following two factors-

1. Closeness of molecules.
2. Density.
3. Since molecules are tightly closed in solids, as compared to liquids and gases, Sound will have a maximum speed in it.
4. Molecules of liquids are loosely packed as compared to solids, so the sound will have a lesser speed in liquids as compared to solids.
5. Molecules of gases are more loosely packed as compared to solids and liquids both, so the sound will have a lesser speed in gases as compared to both solids and liquids.
6. Hence, option (A) is correct.