- TV remotes typically use infrared (IR) signals. - Infrared radiation is a type of electromagnetic wave. - Infrared is often considered part of the 'light' spectrum, distinct from radio or microwaves.
Which one of the following does a TV remote control unit use to operate a TV set?
Asked in UPPCS Prelims 2000 · Topic: Optics (Fiber Optics: Principles and applications)
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