Question

QUESTION 10 A certain brand of skin moisturizer advertises that it contains SPF 15 Sunscreen that protects from UV-A and UV-B rays. Why isn't UV-C mentioned in its product claims? UV-C radiation is not absorbed by ozone, so it has no connection to the story of increased exposure to UV rays or Ozone depletion. UV-C radiation is not as dangerous as is UV-B radiation, so whether or not we are shielded from it does not matter. UV-C radiation is extremely dangerous, but it is completely absorbed in the upper atmosphere by oxygen. O2, as well as ozone, 03. There is no need. UV-C radiation is a natural part of the electromagnetic spectrum, so it only has the same potential for harm as visible light.

Answer 1

Q10. Correct answer is : UV-C radiation is extremely dangerous, but it is completely absorbed in the upper atmosphere by oxygen, O₂, as well as ozone, O₃.

Explanation

There are three types of UV radiation which are classified according to their wavelength. They differ in their biological activity and the extent to which they can penetrate the skin. The shorter the wavelength, the more harmful the UV radiation. However, shorter wavelength UV radiation is less able to penetrate the skin.

Short-wavelength UV-C radiation is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth's surface.

UV-A and UV-B radiation reach the earth's surface and can cause damage to skin.