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?

QUESTION

Medium

Physical Geography

Prelims 2011

A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why?

The presence of ozone causes the reflection of radio waves to Earth.
Radio waves have a very long wavelength.

Which of the statements given above is/are correct?

Select an option to attempt

Explanation

The Ionosphere is a layer in the Earth's atmosphere that is ionised by solar radiation. It plays a crucial role in radio communication as it reflects radio waves back to Earth. This reflection is not due to the presence of ozone but rather due to the ionisation of atoms in the Ionosphere. Therefore, statement 1 is incorrect.

As for statement 2, while it is true that radio waves have a long wavelength, this is not the reason why the Ionosphere facilitates radio communication. The reflection of radio waves by the Ionosphere is due to the ionisation of atoms, not the wavelength of the radio waves. Therefore, statement 2 is also incorrect.

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