What does refresh rate indicate in monitors? MCQ with Answer and Explanation

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What does refresh rate indicate in monitors?

A. Power consumption

B. Color depth

C. Number of pixels

D. How many times screen is redrawn per second

Answer: Option D

Solution (By JKSSB Mock Tests)

Measured in Hz, higher reduces flicker (e.g., 144Hz).

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Portable document scanners are useful for:

A. High volume office only

B. 3D printing

C. Mobile professionals needing quick digitization

D. Photo editing

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Correct Answer: Option C

Explanation:
Compact and battery powered options exist.

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Question #2

What does the term DPI refer to in the context of printers and scanners?

A. Digital Print Intensity

B. Display Pixel Index

C. Dots Per Inch

D. Data Processing Index

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Correct Answer: Option C

Explanation:
DPI stands for Dots Per Inch, measuring the resolution of printers and scanners.

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Question #3

Which feature in printers saves ink?

A. Draft mode or eco mode

B. High quality mode

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Correct Answer: Option A

Explanation:
Lower resolution for drafts.

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