Subject
Computer Science
Topic
Computer Fundamental
Which optical technology commonly uses a blue-violet laser near 405 nm?
Which optical technology commonly uses a blue-violet laser near 405 nm?
a)
DVDb)
CDc)
Floppy diskd)
Blu-ray DiscExplanation
Blu-ray technology uses a shorter-wavelength blue-violet laser around 405 nm.Related questions
Which type of storage retains data even after power is turned off?Which of the following is normally classified as secondary storage?Which storage device uses magnetic platters to store data?Which storage device has no moving mechanical parts during normal data access?Which storage medium is optical rather than magnetic or semiconductor-based?Which device is best described as removable semiconductor storage?Which storage technology is commonly used for long-term archival backup because of low cost per stored bit?What is the main purpose of secondary storage?