Question

The frequency of a sound wave is expressed in-

• A. Seconds
• B. Cycle
• C. Cycle per second
• D. meter per second

Answer 1

The correct option is C

Cycle per second

1. Frequency is defined as the number of vibrations or cycles per second completed by a particle in a wave motion.
2. It is numerically defined as the reciprocal of the Time period.
3. $f=\frac{1}{T}$ , where $f$ is frequency and $T$ is the time period of the object.
4. Unit of frequency is Hertz or Cycles per second.
   Thus, the correct answer is C