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Byju's Answer
Standard IX
Physics
Volume or Loudness
Intensity of ...
Question
Intensity of sound and loudness are the same thing and are measured in decibels.
A
True
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B
False
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Solution
The correct option is
B
False
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Similar questions
Q.
The difference of loudness in decibels
(
d
B
)
between maximum and minimum intensities of two coherent sound sources as they interfere in space is
20
l
o
g
3
. Find the ratio of intensities of two coherent sound sources.
Q.
The ratio of intensities between two coherent sound sources is
9
:
1
. The difference of loudness in decibels
(
dB
)
between maximum and minimum intensities when they interfere in space is
Q.
The power , or loudness, of sound is measured on a scale of increased by a factor of 100
(
=
10
2
), the sound is called twice as loud and when it increases 10,000
(
=
10
4
)
times it is called four times as loud. The exponent of ten is called a bel and one decible is one tenth of a bel. Zero decible is chosen as the intensity of the slowest sound which is just audible or is on the threshold of hearing whereas the intensity of loudest sound is about 170 decibel. A sound of 60 decibel is ......... times more intense than a sound of 40 decibel :
Q.
Question 6
Loudness of sound is measured in units of
(a)
Decibel (dB)
(b)
Hertz (Hz)
(c)
Metre (m)
(d)
Metre/second (m/s)
Q.
The ratio of intensities between two coherent sound sources is 4:1. The difference of loudness in decibels between maximum and minimum intensities,when they interfere in space,is a)10 log 2 b)20 log 3 c)10 log 3 d)20 log 2
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