Question

Electromagnetic waves of frequencies higher than 9sqrt(2) MHz are found to be not reflected by the ionosphere on a particular day at a place. The maximum electron density in the ionosphere is :

Answer 1

Explanation:

In radio communication, skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere, an electrically charged layer of the upper atmosphere.

For high frequencies, the refractive index of ionosphere becomes large and thus no reflection take place; the signal would leave teh earth's atmosphere.

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