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09/01/2021 4:31 pm
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The maximum oscillation disturbance of particles of air forms crest and trough. What is echo? Why don’t we get echo in small room?
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09/01/2021 4:32 pm
The distinct sound heard after reflection of sound from the source is called echo. For echo, the distance of reflecting surface from the source should be more than 17.2 m.