Computer Science for IGCSE & O level - Hardware (Section 14 - No. 21)
What is the primary advantage of using a shorter wavelength laser in an optical disc (like Blu-ray)?
Increased disc durability.
Higher data storage capacity.
Lower manufacturing costs.
Faster disc rotation speed.
Explanation
A shorter wavelength laser allows for smaller pits, which increases the storage density and thus the capacity.
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