In remote control terms, IR stands for what?

Study for the Internet of Things (IOT102) Test. Access comprehensive flashcards and multiple choice questions, each with hints and explanations. Get prepared for your exam!

Multiple Choice

In remote control terms, IR stands for what?

Explanation:
Infrared is the type of light used by many remote controls. IR stands for infrared, a portion of the electromagnetic spectrum just beyond visible red. A remote emits pulses of infrared light from an LED, and the device’s IR receiver detects those pulses with a photodetector and decodes them into commands. The signals are usually modulated at a carrier frequency (about 38 kHz) to filter out ambient light, making the control reliable for short-range, line-of-sight use. The other options describe different concepts (radio waves or generic terms) that don’t match how standard IR remotes convey instructions.

Infrared is the type of light used by many remote controls. IR stands for infrared, a portion of the electromagnetic spectrum just beyond visible red. A remote emits pulses of infrared light from an LED, and the device’s IR receiver detects those pulses with a photodetector and decodes them into commands. The signals are usually modulated at a carrier frequency (about 38 kHz) to filter out ambient light, making the control reliable for short-range, line-of-sight use. The other options describe different concepts (radio waves or generic terms) that don’t match how standard IR remotes convey instructions.

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