Electromagnetic Waves and Communication System — Physics STD 11 Science — Question
Maharashtra BoardEnglish MediumSTD 11 SciencePhysicsElectromagnetic Waves and Communication System4 Marks
Question
Explain sky wave propagation.
✓
Answer
When radio waves from a transmitting antenna reach the receiving antenna after reflection in the ionosphere, the wave propagation is called sky wave propagation.
The sky waves include waves of frequency between 3 MHz and 30 MHz.
These waves can suffer multiple reflections between the ionosphere and the Earth. Therefore, they can be transmitted over large distances.
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