Long range radio transmission is possible whe | vedclass

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(B) Sky wave propagation is a mode of radio wave propagation in which radio waves are reflected or refracted back to the Earth from the ionosphere.Thi

Vedclass · Accepted Answer

$8 - 25\, MHz$

Vedclass · Answer

(B) Sky wave propagation is a mode of radio wave propagation in which radio waves are reflected or refracted back to the Earth from the ionosphere.This phenomenon is primarily used for long-distance communication.The ionosphere acts as a reflecting medium for radio waves within a specific frequency range.According to standard communication physics,the frequency range suitable for sky wave propagation is typically between $2\, MHz$ and $30\, MHz$.Comparing this with the given options,the range $8 - 25\, MHz$ falls within this specified limit.Therefore,option $B$ is the correct answer.

Long range radio transmission is possible when the radio waves are reflected from the ionosphere. For this to happen,the frequency of the radio waves must be in the range:

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