Who invented the lightning rod and bifocal lenses? MCQ with Answer and Explanation

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Who invented the lightning rod and bifocal lenses?

A. Nikola Tesla

B. Michael Faraday

C. Benjamin Franklin

D. Thomas Edison

Answer: Option C

Solution (By JKSSB Mock Tests)

Benjamin Franklin invented the lightning rod, bifocal spectacles, and the Franklin stove.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

The invention of the diesel engine is named after which German mechanical engineer?

A. Rudolf Diesel

B. Nikolaus Otto

C. Gottlieb Daimler

D. Karl Benz

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Correct Answer: Option A

Explanation:
Rudolf Diesel designed a high-efficiency compression-ignition internal combustion engine, patented in 1893.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

Who discovered that plant chromosomes undergo meiosis and crossing over, establishing physical genetic maps?

A. Gregor Mendel

B. Thomas Hunt Morgan

C. Hugo de Vries

D. Charles Darwin

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Correct Answer: Option B

Explanation:
Thomas Hunt Morgan demonstrated chromosome mapping and sex-linked inheritance using Drosophila melanogaster (fruit flies).

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Question #3

Who discovered the existence of infrared radiation in sunlight in 1800 using thermometers and a prism?

A. James Clerk Maxwell

B. Johann Wilhelm Ritter

C. William Herschel

D. Heinrich Hertz

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Correct Answer: Option C

Explanation:
William Herschel discovered infrared light by measuring the temperature rise just beyond the red end of the visible spectrum.

This question belongs to: Static General Knowledge Inventions and Discoveries

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