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Today General Knowledge(GK)
Storage media such as CD read and wirte information using
A)
magnetic dots
B)
magnetic strips
C)
Both (a) & (b)
D)
a laser beam of red light

Correct Answer : Option (D) - a laser beam of red light



The CD drive shines a laser at the surface of the CD and can detect the reflective areas and the bumps by the amount of laser light they reflect. The drive converts the reflections into 1s and 0s to read digital data from the disc.

Published On : June 17, 2021
Category : Computers
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