Question

The time of reverberation of a room A is one second. What will be the time (in seconds) of reverberation of a room, having all the dimensions double of those of room A ?

• A. 2
• B. 4
• C. $\frac{1}{2}$
• D. 8

Answer 1

Answer: (A)

2

Answer 2

Time of reverberation $\propto$ AV​ (sabine's formula)
Area of new room becomes 4 times of A and Volume becomes 8 times of V
Time of reverberation will be 2 seconds

Therefore, the correct option is (A): 2