Which of the following is a type of memory that can be erased by exposing to ultraviolet light? MCQ with Answer and Explanation

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Which of the following is a type of memory that can be erased by exposing to ultraviolet light?

A. Flash

B. PROM

C. EPROM

D. EEPROM

Answer: Option C

Solution (By JKSSB Mock Tests)

EPROM (Erasable Programmable ROM) is erased by ultraviolet light through a quartz window. EEPROM is electrically erased.

This question belongs to: Computer Memory and Storage Devices

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Question #1

Which of the following data storage units represents the smallest value?

A. 1 Megabyte

B. 1 Gigabyte

C. 1 Petabyte

D. 1 Terabyte

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Correct Answer: Option A

Explanation:
Among the options provided, Megabyte (MB) is the smallest unit ($10^6$ or $2^{20}$ bytes), followed by Gigabyte, Terabyte, and Petabyte.

This question belongs to: Computer Memory and Storage Devices

Question #2

Which component of a hard disk contains the actual data?

A. Spindle

B. Platter

C. Read/write head

D. Actuator

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Correct Answer: Option B

Explanation:
Data is stored on the platters, which are circular disks coated with magnetic material. The read/write head reads and writes data to the platters.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the typical capacity of a CD-R in minutes of video (VCD)?

A. 60 minutes

B. 120 minutes

C. 80 minutes

D. 74 minutes

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Correct Answer: Option D

Explanation:
VCD (Video CD) typically holds about 74 minutes of video, but with compression it can vary. Standard CD capacity is 74 or 80 minutes of audio.

This question belongs to: Computer Memory and Storage Devices

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