Question

Frequency of sound waves can be expressed in cycles per second.

• A. True
• B. False

Answer 1

The correct option is A True

1. Frequency is termed as the number of times a particle oscillates in one second during the course of wave propagation.
2. Frequency is given as, $f=\frac{1}{T}$, where, $T$ is time period.
3. As the unit of time period is second ($s$), therefore, unit of frequency is $s^{-1}$.
4. The SI unit of frequency is hertz $\left(Hz\right)$
5. Frequency can also be measured in cycles per second.

Hence, the given statement is true.