The quantity that refers to the number of occurrences that take place in one second is called what?

The quantity that refers to the number of occurrences that take place in one second is called what?

• A. Frequency
• B. Velocity
• C. Period
• D. Wavelength

Answer: (A)

Frequency is the rate at which a repeating event occurs, measured as how many cycles happen in one second. This is exactly what “per second” describes, and it’s expressed in hertz (Hz). Frequency and period are inverses of each other, with f = 1/T, where T is the time for one complete cycle. Velocity describes how fast something moves through space, not how often a repetition occurs. Period is the time for one cycle, not the count per second. Wavelength is the spatial distance between repeats, not a time-based rate.

Frequency is the rate at which a repeating event occurs, measured as how many cycles happen in one second. This is exactly what “per second” describes, and it’s expressed in hertz (Hz). Frequency and period are inverses of each other, with f = 1/T, where T is the time for one complete cycle. Velocity describes how fast something moves through space, not how often a repetition occurs. Period is the time for one cycle, not the count per second. Wavelength is the spatial distance between repeats, not a time-based rate.