In a large telecommunications auditorium, perforated absorbent materials are used to line the ceiling so…

Physics JAMB 2007

In a large telecommunications auditorium, perforated absorbent materials are used to line the ceiling so as to

  • Increase the reverberation of sound in the hall
  • increase the amount of echo in the hall
  • reduce the hight of the ceiling from the floor
  • reduce the reverberation of sound in the hall checkmark

The correct answer is: D

Explanation

In a large auditorium perforated, absorbent materials are used to line the ceiling so as to reduce the effect of multiple reflection of echo called reverberation
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