For reproducing sound, a CD (Compact Disc) audio player uses a

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Q: 101 (IAS/2000)
For reproducing sound, a CD (Compact Disc) audio player uses a
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question_subject: 

Science

question_exam: 

IAS

stats: 

0,24,29,15,5,24,9

keywords: 

{'cd': [0, 2, 0, 0], 'audio player': [0, 1, 0, 0], 'compact disc': [0, 2, 0, 0], 'barium titanate ceramic': [0, 1, 0, 0], 'quartz crystal': [0, 1, 0, 0], 'titanium needle': [0, 1, 0, 0], 'laser beam': [0, 1, 0, 0], 'sound': [4, 3, 10, 15]}