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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound1 Mark
Question
Define the ‘frequency’ and ‘time-period’ of a wave. What is the relation between the two?
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Answer

The number of complete waves (or cycles) produced in one second is called frequency of the wave.
The time required to produce one complete wave (or cycle) is called time-period of the wave.
The time taken to complete one vibration is called time-period.
Relation between time-period an frequency of a wave is:
 $\text{Frequency}=\frac{1}{\text{time period}}$ 

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