Question

When using radiation, such as UV light, to control microbial growth

A) longer wavelengths are more effective
B) shorter wavelengths are more effective.
C) wavelength is not a factor for UV radiation.
D) all wavelengths are equally effective.

Answer 1

option B

Step-by-step explanation:

The correct answer for the given question is option b) which is "shorter wavelengths are more effective".

The method of disinfection in which the short wavelengths UV light is used is called as the "Ultraviolet germicidal irradiation". The wavelength of these UV light used varies between the 200 nm and 300 nm.