Question

Which one of the following is an incorrect statement in the transmission of electromagnetic waves?

• A. Ground wave propagation is for high-frequency transmission
• B. Skywave propagation is facilitated by ionospheric layers
• C. Space wave is of high frequency and is suitable for line of sight communication
• D. Space wave is used for satellite communication
• E. Very high-frequency waves cannot be reflected by the ionospheric layers

Answer 1

The correct option is A

Ground wave propagation is for high-frequency transmission

1. A ground wave is a radio wave that reaches a receiver from a transmitter directly and there is no reflection from the ionosphere.
2. Sky wave is a type of radio wave that is reflected from the ionosphere.
3. It is a type of radio wave (electromagnetic wave) that travels directly from the transmitter to receiver without being reflected.
4. Electromagnetic waves are a type of radiation that includes radio waves.
5. Radio waves have a great range of travel.
6. Radio waves can pass through solid objects.
7. Radio waves have a longer wavelength than infrared light.

Hence, the correct answer is option (A).