CBSE Class 9 Science Question 14 of 33

Sound — Question 14

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Question 14

What is reverberation? How can it be reduced?

Answer

The persistence of sound in an auditorium as a result of repeated reflections is known as reverberation.

To reduce reverberation, the roof and walls of the auditorium are generally covered with sound-absorbent materials like compressed fibreboard, rough plaster or draperies. The seat materials are also selected on the basis of their sound absorbing properties