Computer Science for IGCSE & O level - Hardware (Section 7 - No. 28)
What determines the storage capacity of an optical disc?
The type of material used for the disc.
The wavelength of the laser used to read and write data.
The color of the disc.
The rotational speed of the disc.
Maelezo
Shorter wavelength laser beams allow for smaller pits and, therefore, increased capacity.