Subject
Computer Science
Topic
Computer Fundamental
Which laser wavelength is commonly associated with DVD technology in the user's master PDF?
Which laser wavelength is commonly associated with DVD technology in the user's master PDF?
a)
Approximately 650 nmb)
Approximately 405 nmc)
Approximately 780 nmd)
Approximately 1550 nmExplanation
The master PDF explicitly describes a standard DVD as using a 650 nm red laser.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?
