A layer in the Earths atmosphere called Ionosphere facilitates radio communication. Why ? 1. The presence of ozone causes the reflection of radio waves to Earth. 2. Radio waves have a very long wavelength. Which of the statements given above is/ correct?

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Q: 27 (IAS/2011)
A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why ?
1. The presence of ozone causes the reflection of radio waves to Earth.
2. Radio waves have a very long wavelength.
Which of the statements given above is/ correct?
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question_subject: 

Geography

question_exam: 

IAS

stats: 

0,84,173,20,113,40,84

keywords: 

{'ionosphere facilitates radio communication': [0, 0, 0, 1], 'radio waves': [1, 2, 3, 2], 'atmosphere': [1, 1, 4, 7], 'ozone': [3, 0, 3, 5], 'long wavelength': [0, 0, 0, 3], 'layer': [4, 1, 3, 2], 'earth': [0, 1, 1, 1], 'reflection': [1, 1, 2, 19]}