JEE Main · PhysicsEasy
- A.$> 30 \text{ MHz}$
- B.$< 2 \text{ MHz}$
- C.$2 \text{ MHz} \text{ to } 30 \text{ MHz}$
- D.$> 300 \text{ MHz}$
Show correct answer & step-by-step solution
Correct answer: C — $2 \text{ MHz} \text{ to } 30 \text{ MHz}$
Solution
Sky wave propagation relies on the reflection of radio waves by the ionosphere. This method is effective for frequencies in the range of to .
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