What is the main use of a webcam in hardware context? MCQ with Answer and Explanation

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What is the main use of a webcam in hardware context?

A. Storage

B. Output device

C. Video input for conferencing

D. Processing

Answer: Option C

Solution (By JKSSB Mock Tests)

Essential for remote communication.

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Question #1

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Which device converts digital signals from the computer into visual output on screen?

A. Mouse

B. Scanner

C. Monitor

D. Keyboard

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Correct Answer: Option C

Explanation:
Monitor is an output device that displays visual information from the computer.

This question belongs to: Computer Computer Hardware

Question #2

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The contrast ratio in monitors indicates:

A. Color count

B. Difference between brightest and darkest

C. Refresh rate

D. Resolution

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Correct Answer: Option B

Explanation:
Higher is better for depth.

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Question #3

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What does 'multi-touch' enable on input devices?

A. Audio control

B. Single click only

C. Gestures like pinch to zoom

D. Text input

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Correct Answer: Option C

Explanation:
Common in touchscreens.

This question belongs to: Computer Computer Hardware

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