Question

Why are the ceilings of concert halls curved?
Define reverberation? List any two ways in which reverberation can be reduced in a big hall.
A ship sends out ultrasound that returns from the seabed and is detected after 3.42s. If the speed of ultrasound through sea water is 1531 m/s, what is the distance of the seabed from the ship?

Answer 1

1.The ceilings of concert halls are curved so that reverberation should reduce or else doubling of sounds will happen and we will not be able to hear clearly anything

2.The reflection of sound that results in a long persistence is called reverberation.

3.Reverberation can be reduced by using stethoscope , megaphones,ear trumps etc...

4.We know

$= 2d = v \times t \\ = 2d = 1531 \times 3.42 \\ = d = 1531 \times 3.42 \div 2 \\ = d = 2618.01m$