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Standard VII
Mathematics
Building 3-D Objects
what is the d...
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what is the difference between decibles and hertz
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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.
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.
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 intensity between two coherent sound sources is
4
:
1
. When they interfere in space, the difference of loudness between points of maximum and minimum intensity in decibel (
d
B
) is
Q.
What is the loudness of a normal conversation in decibels?
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