The wavelength of the light is 6.00 × 10^(-5) m.
The formula connecting frequency f and wavelength λ is
fλ = c
where c = the speed of light [2.998 × 10^8 m·s^(-1)]
We can rearrange the formula to get
λ = c/f
∴ λ = 2.998 × 10^10 m·s^(-1)/5.00 × 10^12 s^(-1) = 6.00 × 10^(-5) m = 60.0 µm