Which one of the following is the medium in optical storage system for reading and recording data?
[amp_mcq option1=”Ultraviolet light” option2=”Laser light” option3=”Black light” option4=”High-energy visible light” correct=”option2″]
This question was previously asked in
UPSC CISF-AC-EXE – 2024
The correct answer is B) Laser light. Optical storage systems, such as CD, DVD, and Blu-ray drives, use laser beams to read and write data. The laser light interacts with the surface of the disc, reflecting differently off the ‘pits’ and ‘lands’ (or phase changes) that represent the stored binary data.
Optical storage technology relies on the use of focused light, specifically lasers, to interact with the storage medium surface for data retrieval and recording.