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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound1 Mark
Question
What is the time-period of a tuninh fork whose frequency is 200Hz?
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Answer

$\text{Frequency}=\frac{1}{\text{Time period}}$
$\text{Frequency}=200\text{Hz}$
$\text{Time period}=\frac{1}{\text{Frequency}}$
$=\frac{1}{200}=5\times10^{-3}\ \text{sec}$

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