Question

Ozone in stratosphere can reduce the percentage of UV rays from sun to the extent of :

• A. 80.4%
• B. 90.2%
• C. 99.5%
• D. 100%

Answer 1

Answer: (C)

99.5%

In stratosphere, ozone here absorbs high energy UVB and UVC energy waves from the Sun and is broken down into atomic oxygen (O) and diatomic oxygen.

Atomic oxygen is found prevalent in the upper stratosphere due to the bombardment of UV light and the destruction of both ozone and diatomic oxygen.

Here, ozone reduces the percentage of UV rays from sun upto to the extent of 99.5%.