Final answer:
The frequency of light with a wavelength of 450 mm is 6.67 x 10^8 Hz.
Step-by-step explanation:
To calculate the frequency of light with a given wavelength, we can use the equation c = fλ. Given that c = 3.0 x 108 m/s, we can rearrange the equation to solve for frequency (f).
Using the given wavelength of 450 mm (or 0.45 m), we can plug in the values:
f = c / λ = 3.0 x 108 m/s / 0.45 m = 6.67 x 108 Hz.