Who discovered that light waves traveling through tiny structural apertures display edge-bending profiles, establishing Diffraction? MCQ with Answer and Explanation

Question

Who discovered that light waves traveling through tiny structural apertures display edge-bending profiles, establishing Diffraction?

A. Francesco Maria Grimaldi

B. Thomas Young

C. Isaac Newton

D. Christiaan Huygens

Answer: Option A

Solution (By JKSSB Mock Tests)

Italian physicist Grimaldi coined the exact term 'diffraction' and accurately recorded the phenomenon in a posthumous 1665 publication.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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Who discovered that certain living tissue matrices lack internal cell partitions, establishing syncytial structures?

A. Theodor Schwann

B. Robert Hooke

C. Matthias Schleiden

D. Antonie van Leeuwenhoek

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Correct Answer: Option A

Explanation:
Schwann expanded cell structural definitions across animal physiology, establishing shared base principles with plant tissues.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered that yellow fever is transmitted by a specific mosquito species rather than direct human contact?

A. Louis Pasteur

B. Walter Reed

C. Carlos Finlay

D. Ronald Ross

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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.

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Question #3

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Who discovered the presence of the cellular mitochondria organelle, naming them 'bioblasts' before they were renamed?

A. Carl Benda

B. Camillo Golgi

C. Richard Altmann

D. Robert Hooke

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Correct Answer: Option C

Explanation:
Richard Altmann identified the structures in 1890; Carl Benda later coined the exact term 'mitochondria' in 1898.

This question belongs to: Static General Knowledge Inventions and Discoveries

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