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What is the frequency of a vibrating body whose time period is $0.05\ sec$?
Here given, time period $T=0.05\ sec$
Therefore, the frequency of the vibrating body $=\frac{1}{T}$
$=\frac{1}{0.05}\ Hz$
$=\frac{100}{5}\ Hz$
$=20\ Hz$
Thus, the frequency of the vibrating body is $20\ Hz$.
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