Answer:
Wavelength, 
Step-by-step explanation:
A dermatology patient is treated with ultraviolet light having a wavelength of 375 nm. We need to express the wavelength in centimeters.
Firstly, it is required to use following conversions as :

Now to convert 375 nm to cm, we can use the following unitary method as :


So, the wavelength of ultraviolet light is
. Hence, this is the required solution.