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Standard IX
Physics
S.I Unit of Frequency
14.Two tunnin...
Question
14.Two tunning forks A and B of frequencies 200hz and 400 have are vibrated simultaneously. Then the ratio of time taken by the sound produced by A and B travel 660m and 990m respectively in air is ---------( velo. = 330 m/s)
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Q.
Two tuning forks A, B vibrate with frequencies in the ratio 2 : 7 and their wavelength in the ratio 3 : 4 respectively.
Find the tuning fork producing greater velocity of sound.
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The frequency of tuning forks A and B are respectively 3% more and 2% less than the frequency of tuning fork C, when A and B are simultaneously excited, 5 beats/sec are produced, then the frequency of the tuning fork A(in Hz) is
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Two tuning forks A, B vibrate with frequencies in the ratio 2 : 7 and their wavelengths in the ratio 3 : 4 respectively.
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Q.
The frequency of tuning forks
A
and
B
are respectively
3
%
more and
2
%
less than the frequency of the tuning fork
C
. When
A
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B
are simultaneously excited then
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Q.
A tuning fork has the frequency of vibration
200
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z
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330
m
/
s
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20
vibrations.
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