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प्रश्न
Where and why are sound-absorbing materials used?
उत्तर
- Sound absorbing materials are used in concert halls or auditoriums to reduce high-intensity reverberation.
- The ceiling or walls of the auditorium are covered with sound absorbing materials like thermocol, fiber board, rough plaster.
- The seats are also made of sound-absorbing material, which reduces additional reverberation.
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संबंधित प्रश्न
What is reverberation?
What name is given to the repetition of sound caused by the reflection of sound waves ?
What name is given to the persistence of sound in a big hall or auditorium ?
Name the device used by doctors to listen to our heartbeats.
What is reverberation ? What will happen if the reverberation time in a big hall is too long ?
Consider the following sound waves marked A, B, C and D.
(a) Which two waves represent sounds of the same loudness but different pitch ?
(b) Which two waves represent sounds of the same frequency but different loudness ?
(c) State whether all these sound waves have been produced by the same vibrating body or different vibrating bodies ?
(d) Which vibrating body/bodies could have generated the sound waves shown here ?
Explain by giving a scientific reason.
The roof of a movie theatre and a conference hall is curved.
Explain by giving a scientific reason.
The intensity of reverberation is higher in a closed and empty house.
Why do we hear the sound produced by the humming bees while the sound of vibrations of the pendulum is not heard?
The distance of underwater objects can be deduced by the formula ______.
What is Reverberation?
Why are the roots and walls of the auditorium covered with rough plaster?
