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CBSE Class 9 Answered

How is sound produced? Mention any 4 methods of producing sound.
Asked by shivalaxmi0205 | 12 Jan, 2023, 07:28: PM
answered-by-expert Expert Answer
Sound is produced due to mechanical vibrations of a medium.
 
Mechanical vibrations produce pressure fluctuation in air .
 
This pressure fluctuations travel in air as a wave motion. In this way sound is produced and is propagated in a medium.
 
 
(1) Sound produced by string instruments.
 
Vibrations in string or wire of string instruments like Veens, violin produce pressure fluctuation in air
and this pressure fluctuations travel in air as sound wave.
 
(2) Sound produced by pipe instruments .
 
Vibrations of air column in pipe instruments like flute produce pressure fluctuation in air
and this pressure fluctuations travel in air as sound wave.
 
(3) Human speech
 
When people talk or animals make sound , the vocal cord vibrates . This vibrations of vocal cord produce pressure fluctuation in air
and this pressure fluctuations travel in air as sound wave.
 
(4) Sound produced by Loudspeaker.
 
Electrical signals make the diaphragm of loudspeaker to vibrate .This vibrations of diaphragm produce pressure fluctuation in air
and this pressure fluctuations travel in air as sound wave.
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