Which scanner uses a linear array of sensors? MCQ with Answer and Explanation

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Which scanner uses a linear array of sensors?

A. Flatbed scanner

B. Drum scanner

C. All of them

D. Film scanner

Answer: Option A

Solution (By JKSSB Mock Tests)

Flatbed uses CCD or CIS sensor arrays.

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What does the 'dpi' setting affect in a mouse?

A. Color of LED

B. Battery life

C. Wireless range

D. Sensitivity and cursor speed

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Correct Answer: Option D

Explanation:
Higher DPI means more sensitive mouse movement.

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Question #2

What is blue light filter in monitors?

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Explanation:
Health feature.

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Question #3

What type of scanner is commonly used in offices for converting physical documents into digital images?

A. Drum Scanner

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Correct Answer: Option B

Explanation:
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