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

coloured light
unpolarized concentric light
polarized light
None of these
laser

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Computer Basic Information
Which of the following will happen when data is entered into a memory location?

It will change the address of the memory location
It will not be fruitful if thjere is already some data at that location
It will erase the previous content
None of these
It will add to the content of the location

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