Which pointing device uses a ball for movement detection? MCQ with Answer and Explanation

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Which pointing device uses a ball for movement detection?

A. Stylus

B. Touchpad

C. Optical mouse

D. Trackball

Answer: Option D

Solution (By JKSSB Mock Tests)

User moves the ball.

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Question #1

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The number of bits processed by CPU at a time is called:

A. Word size

B. Bus width

C. Byte size

D. Clock cycle

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Correct Answer: Option A

Explanation:
Word length or bus width, e.g., 64-bit processor.

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Question #2

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What is the main use of a document feeder in scanners?

A. To increase resolution

B. To feed multiple sheets automatically

C. To change colors

D. To print scanned documents

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Correct Answer: Option B

Explanation:
Automatic Document Feeder (ADF) speeds up batch scanning.

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Question #3

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What is the benefit of IPS glow?

A. No glow

B. It is a minor drawback actually, but IPS has good angles

C. Advantage

D. For TN

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Correct Answer: Option B

Explanation:
Trade-off for viewing angles.

This question belongs to: Computer Computer Hardware

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