2000 General Studies, all questions
UPSC Prelims 2000 · General Studies
Question 95: Science and Technology
Which one of the following does a TV remote control unit use to operate a TV set?
aLight waves
bSound waves
cMicro waves
dRadio waves
The published answer to this question looks wrong to us, so none is shown until it has been checked.
Source: UPSC, Civil Services (Preliminary) Examination 2000, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.