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/are correct ?
Options
(a)1 only
(b)2 only
(c)Both 1 and 2
(d)Neither 1 nor 2
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Class 11Composition and Structure of Atmosphere— NCERT Geography, Chapter 7. The atmosphere is a mixture of gases, water vapour and dust that envelops the earth; 99% of its mass lies within 32 km. Oxygen becomes negligible by 120 km; carbon…
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