Optical | MCQs

Explanation

Laser technology is used in compact disc

Compact Disc is an example of Optical Storage

James T. Russell invented C.D. (Compact Disc).

 co-developed by Philips and Sony to store and play digital audio recordings.

history

 In August 1982, the first compact disc was manufactured.

It was then released in October 1982 in Japan and branded as Digital Audio Compact Disc.

It was released on March 2, 1983, in North America and Europe.

FIA CBT VU PAPER 22-12-2021

ND30-4-2023

Explanation

Explanation

Optical Fiber Systems are utilized in Telecommunication Systems to transmit data as light signals through thin glass or plastic fibers.

It enabling high-speed internet, voice, and data communications over long distances.

Explanation

 Short-sight defect could be corrected by using concave lens while long-sight defect could be corrected by using convex lens.

Explanation

CDs are circular discs that are 4.75 in (12 cm) in diameter.

The CD standard was proposed by Sony and Philips in 1980 and the technology was introduced to the U.S. market in 1983.

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VU FIA PAPER 18-12-2021

Explanation

Blu-ray disk is a type of optical storage that uses laser technology to read and write data.

It stores high-definition video and large data.

Unlike floppy disks and hard disks which are magnetic storage devices.

Explanation

A CD (Compact Disc) is read using a laser beam in an optical drive.

The laser detects tiny pits and lands on the disc surface to read data.

Explanation

OMR stands for Optical Mark Recognition.

It is a technology that uses light to identify marks made on a paper document, typically for data collection and processing. 

Explanation

A standard compact disc (CD) is 120 mm (12 cm) (4.75 inches) in diameter and 1.2 mm (0.05 inch) thick.

This size is widely used for storing data, music, or video.

Explanation

Optical disks like CDs and DVDs store data in a spiral track that starts from the innermost part and moves outward.

This spiral path allows continuous reading of data as the disk spins.