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Subjects
Science State Board
Class 9
Sound
Textbook questions
1.
Numerical problem I
Exercise condition:
3
m.
The frequency of a source of sound is \(600\) \(Hz\). Calculate the number of times it vibrates in a minute?
The formula to find time period is
Time
period
=
1
wavelength
Number
of
times
=
frequency
×
time
period
By applying the known values in the formula, we get
\(number of vibration\) \(=\)
The unit is
metre
no unit
.
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