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Science and Technology - General Knowledge Questions
Which kind of light waves are used in the remote control of Television
A)
Infrared
B)
X-ray
C)
Visible light
D)
None of the above

Correct Answer :   Infrared

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.

Published On : June 8, 2021
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