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Sound
The speed of sound in air depends on the
chemical conditions
Physical conditions
pitch
Area
Author:
rikazzz
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Everyday Science
As compare to air, sound waves travel
3 times faster
5 times slower
5 times faster
2 times lower
Author:
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Sound
The sounds which have a jarring and unpleasant effect on our ears is called
frequency
amplitude
noise
musical sounds
Author:
rikazzz
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Sound
The difference between the loudness of the unknown sound and the loudness is
intensity level of unknown sound
intensity level of known sound
quality of sound
pitch of sound
Author:
rikazzz
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Sound
The decibel scale is a logarithm measure of the amplitude of
sound waves
light waves
heat waves
electric current
Author:
rikazzz
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Sound
The human ear responds to intensities in range
10
-12
Wm
-2
 to 1Wm
-2
15Wm
-2
 to 18Wm
-2
10
8
Wm
-2
 to 2Wm
-2
10
-3
Wm
-1
 to 10
-6
Wm
-1
Author:
rikazzz
Comment
Sound
A higher pitch means the
zero frequency
lower frequency
higher frequency
lower loudness
Author:
rikazzz
Comment
Sound
The technique or method to absorb undesirable sounds by soft and porous surface is called
acoustic protection
unacoustic protection
audible protection
decibel protection
Author:
rikazzz
Comment
Everyday Science
The reflection of sound is called
quality
loudness
pitch
echo
Author:
rikazzz
Comment
Sound
Multiple reflections are called
reverberations
refraction
echo
compressions
Author:
rikazzz
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