Which physical attribute limits the maximum total storage volume capacity of a standard optical disc? MCQ with Answer and Explanation

Which physical attribute limits the maximum total storage volume capacity of a standard optical disc?
A. The track pitch distance and the wavelength of the reading laser beam.
B. The rotational speed of the spindle electric motor.
C. The physical thickness of the label paper.
D. The type of plastic used in the outer tray assembly.
Answer: Option A
Solution (By JKSSB Mock Tests)
Optical data capacity depends on how tightly tracks can be spaced (track pitch) and how small the laser's focal point can be, which is determined by the laser's wavelength.

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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is a non-volatile semiconductor memory that can be erased and reprogrammed in large blocks rather than byte-by-byte?
A. Mask ROM
B. Flash Memory
C. DRAM
D. SRAM

Correct Answer: Option B


Explanation:
Flash memory is a variation of EEPROM that is erased and programmed in large blocks or sectors, making it ideal for SSDs, pen drives, and SD cards.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the data storage capacity limit of an older, standard single-density 5.25-inch floppy disk?
A. 720 KB
B. 360 KB
C. 2.88 MB
D. 1.44 MB

Correct Answer: Option B


Explanation:
Early double-sided single-density or double-density 5.25-inch floppy disks used on classic PC hardware typically maxed out around 360 KB of capacity.

This question belongs to: Computer Memory and Storage Devices
Question #3
What does the term 'seek time' refer to in a hard disk drive?
A. Time to rotate the disk
B. Time to transfer data to the computer
C. Time to read data from the sector
D. Time to move the head to the correct track

Correct Answer: Option D


Explanation:
Seek time is the time taken for the read/write head to move to the correct track (cylinder) on the platter where the data is stored.

This question belongs to: Computer Memory and Storage Devices