Question

In a good auditorium the reverberation time is

• A. 0.17 V/A
• B. > 0.17 V/A
• C. < 0.17 V/A
• D. none of these

Answer 1

The correct option is C < 0.17 V/A

The time for which sound continues to be heard (due to persistence) after the source has stopped producing the sound is called reverberation time . Sabine gave a formula for reverberation time of a good building , which is

$T=0.16V/A$ ,

where $V=$ volume of building in cubic metre ,

$A=$ total absorption of building ,

hence option C is correct .