Question

Whichone of the following does a TV remains control unit use to operate a TV set?
A) Light waves.
B) Sound wave
C)Micro waves
D) Radio Waves.

Answer 1

Ans is D) Radio Waves.

Radio waves are used to transmit radio and signals. These are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
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Radio wave’s frequencies are from 300GHz to 3 kHz. These waves that are propagated carry signals that are received by the antenna on our television set.