Long-range radio transmission is possible when the radio waves are...

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:

Options

A $150 - 500kHz$
B $80 - 150MHz$
C $1 - 3MHz$
D $8 - 25MHz$

Correct answer

D. $8 - 25MHz$

Step-by-step solution

Skywaves get reflected from the ionosphere having frequency

3MHz

40MHz

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