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30 January, 08:53

How do optical discs store data? select one:

a. a magnet aligns iron particles on a platter.

b. a laser burns tiny pits onto a disc.

c. a digital spectrometer leaves grooves in a platter.

d. electronic memory records data on chips?

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Answers (1)
  1. 30 January, 10:42
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    The answer is B. a laser burns tiny pits onto a disc.
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