Understanding the Relationship

* Period (T): The time it takes for one complete oscillation (cycle).

* Frequency (f): The number of oscillations (cycles) per second.

These two quantities are inversely proportional:

* f = 1/T

Calculation

1. Given: Period (T) = 4.0 seconds

2. Formula: f = 1/T

3. Substitute: f = 1/4.0 seconds

4. Calculate: f = 0.25 Hz

Answer: The frequency of the oscillator is 0.25 Hz (Hertz).