- What factor affects the speed of sound the most in a medium?
- Answer: Temperature
- Explanation: The speed of sound increases with temperature; for example, it is 331 m/s at 0°C and 344 m/s at 22°C in air.
- In which state of matter does sound travel the fastest?
- Answer: Solid
- Explanation: Sound travels fastest in solids because their particles are closely packed, allowing efficient transmission of vibrations.
- What is the speed of sound in air at 25°C?
- Answer: 346 m/s
- Explanation: At room temperature (25°C), sound travels in air at a speed of 346 m/s.
- Which gas allows sound to travel the fastest?
- Answer: Hydrogen
- Explanation: Among gases, hydrogen has the highest speed of sound at 1284 m/s due to its low density.
- Which liquid has the highest speed of sound?
- Answer: Sea water
- Explanation: Among liquids, sea water allows the fastest propagation of sound at 1531 m/s.
- What is the speed of sound in iron?
- Answer: 5950 m/s
- Explanation: In iron, sound travels at 5950 m/s, which is much faster than in air or water due to its dense molecular structure.
- What happens to the speed of sound as density of a medium increases?
- Answer: Increases
- Explanation: Sound travels faster in denser media as the tightly packed molecules transmit vibrations more efficiently.
- Which gas has the lowest speed of sound among the given examples?
- Answer: Sulphur dioxide
- Explanation: Sulphur dioxide has the lowest speed of sound at 213 m/s, slower than air, hydrogen, or helium.
- Which metal has the highest speed of sound?
- Answer: Aluminium
- Explanation: Among common metals, aluminium has the highest speed of sound at 6420 m/s.
- What is the speed of sound in distilled water at 25°C?
- Answer: 1498 m/s
- Explanation: In distilled water at 25°C, sound travels at 1498 m/s, slower than in sea water but faster than in air
