Which input device uses reflected light for operation? MCQ with Answer and Explanation

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Which input device uses reflected light for operation?

A. Optical mouse

B. Mechanical mouse

C. Joystick

D. Trackball

Answer: Option A

Solution (By JKSSB Mock Tests)

Optical mouse detects movement via light reflection.

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Anti-aliasing in monitors relates to:

A. Color temperature

B. Increasing brightness

C. Reducing power

D. Smoothing jagged edges in graphics

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Correct Answer: Option D

Explanation:
Improves visual quality.

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Question #2

HDR support in monitors requires:

A. Low resolution

B. Monochrome

C. Higher brightness and color gamut

D. Slower refresh

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Correct Answer: Option C

Explanation:
For realistic visuals.

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Question #3

Curved monitors are preferred for:

A. Immersive gaming and wide viewing

B. Portability

C. Low power consumption

D. Office text work

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Correct Answer: Option A

Explanation:
They provide better peripheral vision.

This question belongs to: Computer Computer Hardware

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