The invention of the fiber-optic communication system was revolutionized by the research of which Anglo-Chinese physicist? MCQ with Answer and Explanation

Question

The invention of the fiber-optic communication system was revolutionized by the research of which Anglo-Chinese physicist?

A. Charles K. Kao

B. Sumio Iijima

C. Shuji Nakamura

D. C.W. Chu

Answer: Option A

Solution (By JKSSB Mock Tests)

Charles K. Kao won the 2009 Nobel Prize in Physics for groundbreaking achievements concerning the transmission of light in fibers for optical communication.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who discovered that certain types of biological viruses infect and replicate exclusively inside bacterial cell hosts, establishing 'Bacteriophages'?

A. Louis Pasteur

B. Dmitri Ivanovsky

C. Frederick Twort and Félix d'Hérelle

D. Robert Koch

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Correct Answer: Option C

Explanation:
Twort and d'Hérelle independently isolated filterable bacterial lysis agents, establishing early phage therapeutic concepts.

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Question #2

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Who discovered that the chemical element Magnesium is isolated as a distinct metal element via mercury amalgamation?

A. Joseph Black

B. Humphry Davy

C. Carl Wilhelm Scheele

D. Antoine Lavoisier

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Correct Answer: Option B

Explanation:
Black identified magnesium compounds early, but Sir Humphry Davy isolated pure metallic magnesium via electrochemical processing in 1808.

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