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Consider the following statements on Sound Waves. 1. Soundwaves are Longitudinal in nature. 2. The speed of sound in distilled water is more than the speed of sound in sea water. Which among the above is/are correct?

Consider the following statements on Sound Waves. 1. Soundwaves are Longitudinal in nature. 2. The speed of sound in distilled water is more than the speed of sound in sea water. Which among the above is/are correct? Correct Answer <span style="">1 only</span>

CONCEPT

Sound: It is a form of energy produced by vibration or disturbance that propagates in a medium.

  • It travels in the form of longitudinal waves (Compression or rarefaction)

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  • Speed of Sound in a Medium: The speed of sound depends on the properties of the medium through which it travels its temperature and elasticity.
  • The Sound wave is a type of longitudinal mechanical wave which propagates only through a medium by vibrating the molecules of its particle. 
    • Solid having molecules compact together. So usually, the speed of sound is more in Solids compared to liquids and more in liquid than gases. 

Explanation:

1. Soundwaves are Longitudinal in nature. - Correct

2. The speed of sound in distilled water is more than the speed of sound in sea water. - Incorrect

Speed of sound in different media at 25 ºC
State Medium Speed of sound (m/s)
Solid
 Solids Aluminium 6420
Nickel 6040
Steel 5960
Iron 5950
Brass 4700
Glass (Flint) 3980
liquid
 Liquids Water (Sea) 1531
Water (distilled) 1498
Ethanol 1207 1207
Methanol 1103
gas
 Gases Hydrogen 1284
Helium 965
Air 346
Oxygen 316
Sulfur dioxide 213

https://ncert.nic.in/ncerts/l/iesc112.pdf

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