Computer Science for IGCSE & O level - Hardware (Section 2 - No. 19)
What is an advantage of using a shorter wavelength laser in optical storage (e.g., Blu-ray over DVD)?
Higher data transfer speeds.
Greater storage capacity.
Reduced cost of manufacturing.
Lower power consumption.
Explication
A shorter wavelength allows for smaller pits and more tracks on the disc, resulting in higher storage capacity.