The frequency of a wave that has a velocity equal to the speed of light is dependent on the wavelength of the wave. The speed of light in a vacuum is approximately 299,792,458 meters per second.
The formula that relates the frequency (f), wavelength (λ), and velocity (v) of a wave is:
v = f * λ
If the velocity (v) is equal to the speed of light (c), then we can rewrite the formula as:
c = f * λ
Solving for the frequency (f), we have:
f = c / λ
Therefore, the frequency of a wave that has a velocity equal to the speed of light is inversely proportional to its wavelength. As the wavelength decreases, the frequency increases, and vice versa.