CCC Online Test

Which technology is used in optical disks


Question : Which technology is used in optical disks?


A. Mechanical
B. Electrical
C. Electro Magnetic
D. Laser



Solution
D. Laser


Explanation

The optical disc makes use of laser technology: digital data are recorded by burning a series of microscopic holes, or pits, with a laser beam into thin metallic film on the surface.

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