Who formulated the mathematical equations governing the unified theory of electricity, magnetism, and optics? MCQ with Answer and Explanation

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Who formulated the mathematical equations governing the unified theory of electricity, magnetism, and optics?

A. Michael Faraday

B. Heinrich Hertz

C. Albert Einstein

D. James Clerk Maxwell

Answer: Option D

Solution (By JKSSB Mock Tests)

James Clerk Maxwell formulated Maxwell's Equations, proving that light is an electromagnetic wave.

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 thermometer scale fixed at 0 for freezing and 100 for boiling water was done by whom?

A. Daniel Gabriel Fahrenheit

B. Anders Celsius

C. René Antoine Ferchault de Réaumur

D. Lord Kelvin

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Correct Answer: Option B

Explanation:
Swedish astronomer Anders Celsius proposed the centigrade temperature scale in 1742.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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The invention of the common chemical matchstick containing safer amorphous red phosphorus instead of toxic white phosphorus is called what?

A. Friction Match

B. Lucifer Match

C. Congreve Match

D. Safety Match

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Correct Answer: Option D

Explanation:
John Edvard Lundström developed the commercial safety match in Sweden by putting red phosphorus on the striking strip rather than the match head.

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Question #3

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Who discovered the optical law of refraction independently, which relates the angles of incidence and refraction?

A. Christiaan Huygens

B. Willebrord Snellius

C. René Descartes

D. Isaac Newton

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Correct Answer: Option B

Explanation:
Willebrord Snellius formulated the law of refraction (Snell's Law) in 1621, determining refractive index constants.

This question belongs to: Static General Knowledge Inventions and Discoveries

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