Question

The time period of a sound wave is $0.02s$. Find its frequency (in Hz)?

• A. 50

Answer 1

The correct option is A 50
Given, the time period $=0.02s$.
The frequency of a wave is the reciprocal of time.
Frequency, $\nu =\frac{1}{timeperiod\left(T\right)}$
$\nu =\frac{1}{0.02}$$s$
$\nu =50Hz$