A beam of light used to record and retrieve data on optical disks is k

1.	A beam of light used to record and retrieve data on optical disks is known as
A.	polarized light
B.	unpolarized concentric light
C.	laser
D.	coloured light
E.	None of the above
Answer» D. coloured light

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A beam of light used to record and retrieve data on optical disks is known as

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