Question

In which gas is the speed of sound is maximum? What is its value?

Answer 1

1. Speed of the sound is the least in gases.
2. Speed of sound depends on the density of the medium.
3. For lighter gas of less density, the speed of the sound is greater.
4. The molecular weight of hydrogen atoms is less as compared to other gases, hence H₂ molecules are lighter and the speed of sound is maximum.
5. The value of the speed of sound in hydrogen gas, i.e., $1284m{s}^{-1}$ at $0^{o}C$.