which communication media works on line stight technique
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Answer:
Radio Frequency
Walkie-talkies and handheld two-way radios rely on signals that travel in a straight line.
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Answer:
Infrared Transmission
Infrared wave is used for very short range communication purposes such as television and it's remote. Infrared travels in a straight line hence it is directional by nature. Because of high frequency range, Infrared cannot cross wall-like
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