The invention of the common household cooking device known as the Microwave Oven was an accidental discovery by whom? MCQ with Answer and Explanation

The invention of the common household cooking device known as the Microwave Oven was an accidental discovery by whom?
A. Thomas Edison
B. Percy Spencer
C. Robert Watson-Watt
D. Theodore Maiman
Answer: Option B
Solution (By JKSSB Mock Tests)
Spencer noticed a candy bar melted in his pocket in 1945 while standing near an active military radar magnetron vacuum tube.

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Practice More Inventions and Discoveries Questions

Question #1
Who discovered the exact relationship between mechanical work done and heat generated, leading to the SI unit of energy?
A. James Prescott Joule
B. Lord Kelvin
C. Rudolf Clausius
D. James Watt

Correct Answer: Option A


Explanation:
James Prescott Joule established the mechanical equivalent of heat through rigorous thermodynamic experiments.

Question #2
Who invented the lightning rod and bifocal lenses?
A. Benjamin Franklin
B. Michael Faraday
C. Thomas Edison
D. Nikola Tesla

Correct Answer: Option A


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

Question #3
Who discovered the specific virus responsible for causing AIDS (Human Immunodeficiency Virus)?
A. David Baltimore
B. Luc Montagnier and Robert Gallo
C. Jonas Salk
D. Howard Temin

Correct Answer: Option B


Explanation:
Luc Montagnier and Robert Gallo isolated and identified the retrovirus HIV as the causative agent behind AIDS in the 1880s.