Who discovered the physical phenomenon of electromagnetic radio waves traveling through the air, verifying Maxwell's equations? MCQ with Answer and Explanation

Question

Who discovered the physical phenomenon of electromagnetic radio waves traveling through the air, verifying Maxwell's equations?

A. Nikola Tesla

B. Michael Faraday

C. Heinrich Hertz

D. Guglielmo Marconi

Answer: Option C

Solution (By JKSSB Mock Tests)

Heinrich Hertz built spark-gap transmitter devices in 1887 to physically prove radio waves transmit energy through empty space.

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 windshield wiper for automobiles was patented by whom?

A. Josephine Cochrane

B. Mary Anderson

C. Stephanie Kwolek

D. Henry Ford

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Correct Answer: Option B

Explanation:
Mary Anderson patented the manual lever-operated windshield clearing arm in 1903 after watching streetcars struggle in sleet storms.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who invented the first practical alternating current (AC) motor and power transmission system?

A. Thomas Edison

B. Nikola Tesla

C. Michael Faraday

D. George Westinghouse

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Correct Answer: Option B

Explanation:
Nikola Tesla patented the AC induction motor and polyphase system, which revolutionized long-distance electrical grid power distribution.

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Question #3

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The invention of the common maritime signaling system known as the heliograph was optimized by whom?

A. Sir Henry Christopher Mance

B. Alexander Graham Bell

C. Benjamin Franklin

D. Guglielmo Marconi

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Correct Answer: Option A

Explanation:
Mance engineered the specialized flash mirror signaling device in the 1870s for military communications across arid frontier terrain.

This question belongs to: Static General Knowledge Inventions and Discoveries

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