What is radio??????????
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Radio- Device used for the transmission and reception of electromagnetic waves , especially those carrying sound messages
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Explanation:
the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages
Radio is the technology of signaling or communicating using radio waves
Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz).
They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by a radio receiver connected to another antenna.
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