Which electromagnetic wave is used in remote
switches of TV sets ?
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Answer:
The main technology used in home remote controls is infrared (IR) light. The signal between a remote control handset and the device it controls consists of pulses of infrared light, which is invisible to the human eye but can be seen through a digital camera, video camera or a phone camera.
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Infrared waves are used for TV remotes and other remote functionals.
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