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Reverberation can be decreased by using a material on the room's walls or ceiling that absorbs rather than reflects sound waves.

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Important Questions on Sound

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Science>Physics>Sound>Reflection and Absorption of Sound
The value of x in the given figure for hearing the loudest ticking sound is
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Science>Physics>Sound>Reflection and Absorption of Sound
A student performs the experiment of 'reflection of sound'. He/she records following values of the angle of incidence and angle of reflection.
S.No. Set 1 Set 2 Set 3 Set 4 Set 5
Angle of incidence 30° 40° 45° 50° 60°
Angle of reflection 60° 50° 45° 30° 60°
The sets correctly by him/her are
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Science>Physics>Sound>Reflection and Absorption of Sound
For verifying the laws of reflection of sound experimentally, the reflecting surface (screen) used should be
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Science>Physics>Sound>Reflection and Absorption of Sound
The common property between sound wave and light wave is:
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Science>Physics>Sound>Reflection and Absorption of Sound
If the angle of incidence of a sound wave makes an angle of 45° with the normal, the angle of reflection is:
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Science>Physics>Sound>Reflection and Absorption of Sound
Narrow metal tubes, well polished from inside, are used in this experiment. The tubes should be narrow in order to make sound waves
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Science>Physics>Sound>Reflection and Absorption of Sound
While performing an experiment on verifying the laws of reflection of sound, a student is to choose between (i) a narrow or a wide tube, and (ii) a strong or a faint source of sound. The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a :
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Science>Physics>Sound>Reflection and Absorption of Sound
Soft surfaces are better _____ of sound than hard surfaces.
(Choose from: reflectors / absorbers)
MEDIUM
Science>Physics>Sound>Reflection and Absorption of Sound

The correct position of the ear of the observer is shown in:

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MEDIUM
Science>Physics>Sound>Reflection and Absorption of Sound
An incident sound wave strikes a reflecting surface at an angle of 50°. What is the angle between the incident wave and the reflected wave?
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Science>Physics>Sound>Reflection and Absorption of Sound

Which of the following set-ups is best suited for verifying the laws of reflection of sound?
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Science>Physics>Sound>Reflection and Absorption of Sound
For verifying the laws of reflection of sound, a student sets up his apparatus. The experiment is more likely to get performed successfully if the screen is a
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Science>Physics>Sound>Reflection and Absorption of Sound
For verifying the laws of reflection of sound experimentally, the reflecting surface (screen) used should be
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Science>Physics>Sound>Reflection and Absorption of Sound
In the experiment for verification of laws of reflection of sound, sound is directed along:
MEDIUM
Science>Physics>Sound>Reflection and Absorption 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?

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EASY
Science>Physics>Sound>Reflection and Absorption of Sound
While performing an experiment on verifying laws of reflection of sound, a student is to choose from (i) a narrow or a wide tube, and (ii) a strong or a faint source of sound.
The observed experimental difference, between the values of angle of incidence and angle of reflection, is likely to be minimum when he chooses a
EASY
Science>Physics>Sound>Reflection and Absorption of Sound
Hard surfaces are better _____ of sound than soft surfaces.
(Choose from: reflectors / absorbers)
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Science>Physics>Sound>Reflection and Absorption of Sound
For doing the experiment on the verification of laws of reflection of sound,
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Science>Physics>Sound>Reflection and Absorption of Sound
If the reflecting surface used is a wooden board covered with woollen cloth, then the reflected sound heard at the end of tube B will be
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Science>Physics>Sound>Reflection and Absorption of Sound
Reflection of sound obeys the law: