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ENGLISH
CURRENT AFFAIRS
APTITUDE
BANKING
UGC NET
REASONING
COMPUTER SC.
COURSES
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for reproducing sound, a cd (compact disc) audio player uses a
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Question
For reproducing sound, a CD (compact disc) audio player uses a:
A
titanium needle
B
laser beam
C
quartz crystal
D
barium titanate ceramic
Answer & Explanation
Option: [B]
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