What are 3 different modes of propagation of radio waves?

Mention three different modes of propagation used in communications system. Explain with the help of a diagram how long distance communication can be achieved by ionospheric reflection of radio waves?

Through which mode of propagation, the radio waves can be sent from one place to another

Through which mode of propagation, the radio waves can be sent from one place to another

Intensity of plane electromagnetic waves in the direction of propagation of wave

Write the difference between the propagation of sound and light waves.

Ground Wave Propagation

Distinguish between Sky wave and Space wave modes of propagation in a communication system.

Distinguish between Sky wave and Space wave modes of propagation in a communication system.

Sky Wave Propagation

In the propagation of electromagnetic waves the angle between the direction of propagation and plane of polarization is