What is a light pen used for? MCQ with Answer and Explanation

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What is a light pen used for?

A. Printing

B. Audio input

C. Direct input on CRT screens

D. Scanning documents

Answer: Option C

Solution (By JKSSB Mock Tests)

Light pen is an old pointing device for screens.

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Question #1

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Multifunction printers can perform:

A. Print, scan, copy, and sometimes fax

B. Only projection

C. Only scanning

D. Only printing

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Correct Answer: Option A

Explanation:
All-in-one printers combine multiple functions.

This question belongs to: Computer Computer Hardware

Question #2

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A portable monitor is useful for:

A. Scanning

B. Traveling professionals needing extra screen

C. Printing

D. Home desktops

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Correct Answer: Option B

Explanation:
USB-C powered options.

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Question #3

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Which technology is used in some keyboards for silent operation?

A. All are loud

B. Scissor-switch or membrane

C. Optical only

D. Mechanical clicky

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Correct Answer: Option B

Explanation:
Suitable for offices.

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