In the remote control of television, electromagnetic waves used are
(A) ultraviolet
(B) microwave
(C) radio wave
(D) infrared
Correct Answer : infrared
Question Asked : SSC Delhi Police Sub-Inspector (SI) Exam 2012
Explanation : In remote control of television receivers at home, the functioning is dependent on the infra-red rays. These rays received by the thermionic valves regulate/ control the working of television.
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Tags : Physics
