The frequency of radiation is directly proportional to its wavelength. To find the frequency of radiation with a given wavelength, we can use the following formula:
frequency = speed of light / wavelength
where the speed of light is approximately 3.0 x 10^8 meters per second.
In this case, the frequency of radiation with a wavelength of 4.50 x 10^-5 cm is:
frequency = 3.0 x 10^8 m/s / (4.50 x 10^-5 cm)
= 3.0 x 10^8 m/s / (4.50 x 10^-5 x 10^-2 m/cm)
= 6.67 x 10^13 Hz
The frequency of radiation with a wavelength of 4.50 x 10^-5 cm is approximately 6.67 x 10^13 Hz.