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.
Paliwanag
A shorter wavelength laser allows for smaller pits, which increases the storage density and thus the capacity.