Optical discs use these to represent data.
A)analog signals
B)magnetic charges
C)pits and lands
D)laser beams

Question

Quizplus · Accepted Answer

Optical discs use pits and lands, which are microscopic depressions and bumps arranged in a spiral track, to represent data. These pits and lands are read and interpreted by a laser beam in the disc drive. Analog signals and magnetic charges are not used in optical discs, and while laser beams are used in the reading process, they do not represent the data themselves.

Optical Discs Use These to Represent Data