Which of the following devices use lasers?
A)DVD players
B)fiber optics communication systems
C)photocopiers
D)UPC price scanners

Question

Quizplus · Accepted Answer

DVD players, fiber optics communication systems, and UPC price scanners all use lasers. Lasers are used in DVD players to read the data on the disc, in fiber optics communication systems to transmit data over long distances, and in UPC price scanners to scan the barcodes on products.

Which of the Following Devices Use Lasers