What is the formula for calculating frequency?

The formula for calculating frequency is defined as the reciprocal of the period (t), which is the time taken for one complete cycle of a waveform or oscillation. Therefore, the correct relationship is:

Frequency (f) = 1 / t

This means that if you know the time period (t) of a cycle, you can find the frequency by dividing one by that time period. Frequency is expressed in hertz (Hz), and it indicates how many cycles occur in one second.

In this context, the other choices do not align with the established definition of frequency. While option C provides the correct formula, the others do not represent any standard mathematical or scientific relationship relevant to frequency.