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Earn 100

Describe the relation between echo and reverberation.

Important Questions on Sound

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Science>Physics>Sound>Reflection of Sound
For doing the experiment on the verification of laws of reflection of sound,
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Science>Physics>Sound>Reflection of Sound
What is meant by reverberation? Give an example.
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Science>Physics>Sound>Reflection of Sound
Why do the stages of auditoriums have curved background, curtains, carpets and false ceilings?
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Science>Physics>Sound>Reflection of Sound
How long does sound persist in our ears?
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Science>Physics>Sound>Reflection of Sound
A person fires a gun. An echo is heard after 2 seconds. Calculate the distance of the person from the cliff from which echo takes place.(take speed of sound =340 m/s)
EASY
Science>Physics>Sound>Reflection of Sound
What is meant by reflection of sound?
MEDIUM
Science>Physics>Sound>Reflection of Sound

While doing an experiment on verifying the laws of reflection of sound, four students measured the angles ∠i and ∠r as shown in the diagram below. The correct measurement of the angles of incidence and angles of reflection has been done by which student?

Question ImageQuestion ImageQuestion ImageQuestion Image

MEDIUM
Science>Physics>Sound>Reflection of Sound
Radiowaves sent from the earth towards the surface of moon are received back on the earth after reflection in 2.5 seconds. If the velocity of radiowaves is 3×108m/s, calculate the distance of the moon from the earth.
HARD
Science>Physics>Sound>Reflection of Sound
An observer standing between two cliffs hears two successive echoes at 3 s and 4 s respectively. Calculate the distance between the cliffs. (speed of sound in air 340 ms).
EASY
Science>Physics>Sound>Reflection of Sound
An echo is heard in 5 seconds. What is the distance between the reflecting surface and the source of sound? Given the speed of sound is 344 m/s.
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Science>Physics>Sound>Reflection of Sound
A person clapped hands near a wall and heard the echoes after 5 s. What is the distance of the wall from the person, if the speed of the sound at that time was 346 ms?  
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Science>Physics>Sound>Reflection of Sound
A man is standing at a distance of 25 m from a high wall. He hears the echo off the high wall, produced by a clap of his hands. If the velocity of sound is 330 ms, what would be the time interval between his original clap and hearing of the echo?
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Science>Physics>Sound>Reflection of Sound
An echo is heard 0.6 s after a person bursts a cracker at a distance of 102 m from a high building. Calculate the speed of the sound.
MEDIUM
Science>Physics>Sound>Reflection of Sound
What is meant by an echo? How is it heard? Explain the various conditions necessary for the formation of echoes.
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Science>Physics>Sound>Reflection of Sound
Why do we not hear echo at all places?
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Science>Physics>Sound>Reflection of Sound
What is meant by persistence of hearing?
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Science>Physics>Sound>Reflection of Sound
Warning sounds include _____.
MEDIUM
Science>Physics>Sound>Reflection of Sound

What is an echo? Explain how the principle of echo is used by

a. bat during its flight at night and

b. a dolphin to locate small fishes as its prey. 

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Science>Physics>Sound>Reflection of Sound
Name a place where you can experience echo.
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Science>Physics>Sound>Reflection of Sound
What are the conditions necessary for the formation of an echo?