The speed of light (c) in air is 2.99792 × 10^8 m/s, and the wavelength of visible light (λ) is 5 × 10^-7 m.
We can use the formula for the speed of light, which is:
c = λν
where ν is the frequency of the light wave.
Solving for ν, we get:
ν = c / λ
Substituting the values we have:
ν = (2.99792 × 10^8 m/s) / (5 × 10^-7 m)
ν = 5.99584 × 10^14 Hz
Therefore, the frequency of the light wave is approximately 5.99584 × 10^14 Hz.