Question

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

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

Answer 1

Answer: (B)

$8-25MHz$

The radiowaves having frequency between $3MHz$ to $30MHz$ are reflected from ionosphere. .