Atmospheric ozone plays a protective role in absorbing high-energy and damaging
ID: 887883 • Letter: A
Question
Atmospheric ozone plays a protective role in absorbing high-energy and damaging UV radiation, including UV-A (320-400 nm), UV-B (280-320 nm), and UV-C (200-280 nm). Unfortunately, human-caused pollution has eroded the ozone layer in the stratosphere, allowing a greater amount of ultraviolet radiation to reach the Earth's surface. The damaging effects of the radiation can be related to it's photon energy.
1- Arrange the regions of UV radiation from overall lowest to highest photon energy.
2- Which region of the UV spectrum has the greatest frequency or they have equal frequency?
Explanation / Answer
The energy of EMW is realted to frequency wavelength as
Energy = hc/ wavelength
So it is inversely proportional to wavelength
a) Arrange the regions of UV radiation from overall lowest to highest photon energy.
UV-A < UV-B < UV-C
b) the energy and frequency are directly related while frequency is inversely proportional to wavelength
Which region of the UV spectrum has the greatest frequency or they have equal frequency
The highest frequency range will be UV-C
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