NDA 2026 General Knowledge question
Consider the following statements regarding the structure of the atmosphere : I. The average height of the troposphere is higher nearer the poles than at the equator. II. The mesosphere contains the ozone layer. III. Radio waves transmitted from the Earth are reflected to the Earth by the ionosphere. IV. In the mesosphere, temperature decreases with an increase in altitude. Which of the statements given above are correct ?
Answer: (C)
Solution
The troposphere is about 8 km high near the poles and about 18 km at the equator, so statement I is wrong. The ozone layer lies in the stratosphere, so
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