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Reverberation time can’t be controlled by ___________

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Reverberation time can’t be controlled by ___________

(a) Temperature

(b) Size of window

(c) Volume of room

(d) Changing carpet

I had been asked this question during an online interview.

I'd like to ask this question from Sounds and Waves in chapter Waves of Engineering Physics I

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Correct option is (d) Changing carpet

For explanation: Reverberation time is the time which sound takes to fall in intensity to one millionth part of its original intensity.

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