Understanding the Relationship
* Speed of light (c): Light travels at a constant speed in a vacuum, approximately 299,792,458 meters per second (m/s).
* Wavelength (λ): This is the distance between two consecutive crests or troughs of a wave.
* Frequency (f): This is the number of wave cycles that pass a point in one second.
The Formula
The relationship between speed, wavelength, and frequency is:
c = λ * f
Solving for Frequency
1. Rearrange the formula: f = c / λ
2. Plug in the values:
* c = 299,792,458 m/s
* λ = 0.2 m
3. Calculate: f = 299,792,458 m/s / 0.2 m = 1,498,962,290 Hz
Answer: The frequency of the light beam is approximately 1,498,962,290 Hertz (Hz).
