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Question

Why are the 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
Reverberation causes sound persistence in concert halls due to multiple echoes. The roof and the walls are covered with sound-proof materials to reduce the echoes and hence, avoid unnecessary multiple reflections.

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