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1.
Who discovered the radio waves?
2.
What is the component that converts an electrical signal into a signal suitable for transmission in a given medium called?
3.
What type of communication is used for underwater communication?
4.
Earth be considered as a communication medium.
5.
A device that can both transmit and receive is called as?
6.
Radio transmission is always the speed of light irrespective of the medium.
7.
What are the factors that affect signal propagation speed assuming no noise?
8.
Which of the following is not an example of simplex communication?
9.
What type of communication is used in a commercial walkie talkie?
10.
What type of communication is used between ATC and aircraft?