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Question

Why are roof and walls of an auditorium covered with sound-absorbing materials?


A
To increase the echo
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B
To increase the sound's loudness
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C
To control the sound's frequency
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D
To reduce multiple reflections
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Solution

The correct option is D To reduce multiple reflections
Reverberations cause sound persistence in the concert halls due to multiple echoes. The roof and the walls are covered with sound absorbing materials to reduce the echoes and hence, avoid multiple reflections.

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