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UPSC Previous Year Questions: CSP 2021

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@HaryanaDue to the ability of ionized atmospheric gases to refract high frequency (HF, or shortwave)radiowaves, theionospherecan reflectradiowaves directed into the sky back toward the Earth.


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Can someone please explain 2nd statement properly?

The question is about relation between ionosphere and radio waves (not radio waves alone).
Due to the ability of ionized atmospheric gases to refract high frequency (HF, or shortwave)radiowaves, theionospherecan reflectradiowaves directed into the sky back toward the Earth.


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