Q.

The scientist who first sent electromagnetic waves to distant places is –

A. James Clerk Maxwell
B. Heinrich Hertz
C. Thomas Alva Edison
D. John Logie Baird
Answer» C. Thomas Alva Edison
Explanation: Radio is the transmission of single through free space by electromagnetic radiation of a frequency significantly below that of visible light, in the radio frequency range, from about 30 kHz to 300 GHz. Those waves are called radio waves.
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