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3 August, 01:41

Which type of electromagnetic wave is used in remote controls to change chanels?

A) Gamma

B) Radio

C) Microwave

D) Infrared

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Answers (1)
  1. 3 August, 04:15
    0
    Your answer is D

    The main technology used in home remote controls is infrared (IR) light ... The infraredlight pulses form a pattern unique to that button. The receiver in the device recognizes the pattern and causes the device to respond accordingly.
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