The invention of the common computing peripheral device known as the inkjet print mechanism was developed by which companies? MCQ with Answer and Explanation

Question

The invention of the common computing peripheral device known as the inkjet print mechanism was developed by which companies?

A. Canon and Hewlett-Packard teams

B. IBM

C. Xerox

D. Apple

Answer: Option A

Solution (By JKSSB Mock Tests)

Independent thermal bubble tracking research by Canon and HP in the late 1970s led to modern consumer inkjet printing.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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The invention of the common mechanical elevator safety brake system was publicly demonstrated at the World's Fair by whom?

A. Henry Bessemer

B. James Watt

C. Elisha Otis

D. Thomas Edison

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Correct Answer: Option C

Explanation:
Otis dramatic demonstration in 1854 involved cutting the platform support rope while standing on it, proving the safety gear worked.

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Question #2

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Who invented the radar (Radio Detection and Ranging) system used by Britain during World War II?

A. Heinrich Hertz

B. Robert Watson-Watt

C. Alan Turing

D. Guglielmo Marconi

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Correct Answer: Option B

Explanation:
Sir Robert Watson-Watt developed the first practical and deployable radar tracking systems for aircraft tracking.

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Question #3

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Who discovered the iconic 'Uncertainty Principle' in quantum physics?

A. Max Born

B. Niels Bohr

C. Erwin Schrödinger

D. Werner Heisenberg

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Correct Answer: Option D

Explanation:
Werner Heisenberg formulated the principle stating that the position and momentum of a subatomic particle cannot be measured simultaneously with absolute precision.

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