Q.

The atmospheric layer reflecting radio waves is called –

A. Ozonosphere
B. Ionosphere
C. Stratosphere
D. Mesosphere
Answer» B. Ionosphere
Explanation: The ionosphere is a part of the upper atmosphere, from about 85 km to 600 km altitude, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth.
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