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?

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CollectorBabu · Accepted Answer

Correct Answer: 2 only. Ionosphere is a region of Earth’s upper atmosphere which is 60 km to 600 km in altitude which is ionized by solar radiation. It is filled with high concentration of free electrons and gases. Waves with longer wavelength like Amplitude Modulated waves and Radio waves get reflected by ionosphere. Such region facilitates radio communication due to presence of electrically charged ions.

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?

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