What is the SI unit of 'loudness' of a sound
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the si unit of loudness is decibles.
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The S.I unit is decibels .
Definition :
Loudness is the characteristic property by which can distinguish two sounds of the same frequency and pitch.
We can distinguish between a faint sound from a loud sound using the property .
Factors affecting loudness
- Loudness is directly proportional to the square of amplitude .
- Loudness is inversely proportional to the square of distances.
- Loudness is directly proportional to the surface of a vibrating body.
- Loudness is directly proportional to the density of the medium.
Loudness is measured in decibels.
A sound having more than 120 dB is considered to be a noise pollutant .
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