Sound Speed in Different Mediums
The speed of sound varies depending on the properties of the medium it travels through, primarily its elasticity and density. Sound generally travels fastest in solids, followed by liquids, and then gases.
Analyzing the Options:
- Gases: Hydrogen and Air are gases. Particles are far apart, leading to slower sound transmission.
- Liquid: Sea water is a liquid. Particles are closer than in gases, allowing faster sound travel than in air.
- Solid: Aluminum is a solid. Its particles are very close together and tightly bound, allowing vibrations (sound) to pass through very quickly.
Comparison of Speeds:
Approximate speeds of sound in these mediums are:
- Air: \(\approx 343 \, \text{m/s}\)
- Sea water: \(\approx 1522 \, \text{m/s}\)
- Hydrogen: \(\approx 1284 \, \text{m/s}\)
- Aluminum: \(\approx 6420 \, \text{m/s}\)
Comparing these values, sound travels significantly faster in Aluminum than in Hydrogen, Air, or Sea water.
Conclusion:
Based on the principle that sound travels fastest in solids due to their structure and elasticity, Aluminum is the medium where sound travels the fastest among the given options.
Important Questions from The Speed of Sound
Which one among the following is true for the speed of sound in a given medium?
The speed of a longitudinal wave in a solid bar is given by v = √(X/ρ), where 'ρ' is density of the medium. What is the unknown term 'X'?
At standard temperature and pressure, in which of the following media does sound propagate with the greatest speed?
The velocity of sound in air is affected by change in the
I. Moisture content of air
II. Temperature of air
III. Composition of air
IV. Atmospheric pressure
Choose the correct answer.
Velocity of sound is maximum in:
