Who discovered that light travels in packets of discrete energy called photons, explaining the Photoelectric Effect? MCQ with Answer and Explanation

Question
Who discovered that light travels in packets of discrete energy called photons, explaining the Photoelectric Effect?
A. Niels Bohr
B. Albert Einstein
C. Louis de Broglie
D. Max Planck
Answer: Option B
Solution (By JKSSB Mock Tests)
Albert Einstein won the 1921 Nobel Prize in Physics for his 1905 paper applying quantum concepts to the photoelectric effect.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered that yellow fever is transmitted by a specific mosquito species rather than direct human contact?
A. Ronald Ross
B. Walter Reed
C. Louis Pasteur
D. Carlos Finlay
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Correct Answer: Option B

Explanation:
Major Walter Reed led the commission that experimentally proved Carlos Finlay's theory that yellow fever is transmitted by the Aedes aegypti mosquito.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
The invention of the flash memory architecture, ubiquitous in USB drives and SSDs, was developed by whom?
A. Fujio Masuoka
B. Alan Turing
C. Douglas Engelbart
D. Tim Berners-Lee
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Correct Answer: Option A

Explanation:
Fujio Masuoka invented both NOR and NAND flash memory while working at Toshiba in the 1980s.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
The discovery of the mechanism of the greenhouse effect in the atmosphere is first attributed to which scientist?
A. Svante Arrhenius
B. John Tyndall
C. Joseph Fourier
D. Guy Stewart Callendar
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Correct Answer: Option C

Explanation:
Joseph Fourier recognized in 1824 that Earth's atmosphere acts like an insulator, warming the planet's surface.
This question belongs to: Static General Knowledge Inventions and Discoveries
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