MCQ
At what height over the earth does the ozone layer exist?
- A$200\ km$
- B$150\ km$
- C$100\ km$
- ✓$25\ km$
✓
Answer
Correct option: D.
$25\ km$
The ozone layer is present in the stratosphere above the Earth. The layer is present at a distance of about $20-30\ km$ away from the surface of the Earth. The layer of ozone is responsible for the absorption of the harmful $\text{UV}$ radiations from the solar radiations. These radiations are prevented from entering the Earth's atmosphere to prevent the development of skin cancer.
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