A common maintenance for optical mice is: MCQ with Answer and Explanation

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A common maintenance for optical mice is:

A. Paper loading

B. Ink refill

C. Cleaning the sensor

D. Replacing ball

Answer: Option C

Solution (By JKSSB Mock Tests)

Dust affects performance.

This question belongs to: Computer Computer Hardware

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Question #1

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Which device uses stepper motors for movement?

A. CPUs

B. RAM modules

C. LED monitors

D. Dot matrix printers and scanners

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Correct Answer: Option D

Explanation:
Precise mechanical positioning.

This question belongs to: Computer Computer Hardware

Question #2

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What is the role of capacitors on motherboards?

A. Processing

B. Voltage stabilization and filtering

C. Display

D. Data storage

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Correct Answer: Option B

Explanation:
Power delivery quality.

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Question #3

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Flicker-free technology in monitors reduces:

A. Eye strain by eliminating PWM flicker

B. Contrast

C. Resolution

D. Brightness

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Correct Answer: Option A

Explanation:
Better for health.

This question belongs to: Computer Computer Hardware

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