Final answer:
The wavelength of ultraviolet light with a frequency of 1.20 × 10^15 Hz is 2.50 × 10^-7 meters or approximately 250 nm.
Step-by-step explanation:
The wavelength of an ultraviolet light can be calculated using the speed of light and the frequency of the light. The speed of light, c, is a constant value of approximately 3.00 × 108 meters per second. The wavelength, λ (lambda), can be found with the formula λ = c / f, where f is the frequency.
Given that the frequency of the ultraviolet light is 1.20 × 1015 Hz, we can calculate the wavelength as follows:
λ = c / f
λ = (3.00 × 108 m/s) / (1.20 × 1015 Hz)
λ = 2.50 × 10-7 meters
Therefore, the wavelength of an ultraviolet light with a frequency of 1.20 × 1015 Hz is approximately 250 nm (2.50 × 10-7 meters).