Final answer:
The frequency of ultraviolet light with a wavelength of 201 nm is approximately 1.49 × 10^15 Hz.
Step-by-step explanation:
The frequency of ultraviolet light with a wavelength of 201 nm can be calculated using the equation:
ƒ = c/λ
Where ƒ is the frequency, c is the speed of light, and λ is the wavelength.
Plugging in the values, we have:
ƒ = (3.0 × 10^8 m/s) / (201 × 10^-9 m) = 1.49 × 10^15 Hz
Therefore, the frequency of ultraviolet light with a wavelength of 201 nm is approximately 1.49 × 10^15 Hz.