Ozone in stratosphere extends

Options

A. 10-20 km
B. 20-25 km
C. 15-30 km
D. 25-40 km

Answer

B

Explanation

Stratosphere zone of earth's atmosphere contains a layer of ozone `(O_(3))` which prevents the earth surface from about `99%` of incoming solar UV radiations. Ozone layer is present in the stratosphere which is also called ozonosphere. It lies at an altitude of 23-25km over equator and its concentration is 300 dobsons.