Who invented the modern electronic television system utilizing a cathode ray tube (CRT)? MCQ with Answer and Explanation

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Who invented the modern electronic television system utilizing a cathode ray tube (CRT)?

A. John Logie Baird

B. Thomas Edison

C. Guglielmo Marconi

D. Philo Farnsworth

Answer: Option D

Solution (By JKSSB Mock Tests)

Philo Farnsworth invented the first fully functional all-electronic television system with an image dissector camera tube.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The concept of 'Inertia' was first formulated by which scientist before being formalized into laws by Newton?

A. Aristotle

B. Johannes Kepler

C. Nicolaus Copernicus

D. Galileo Galilei

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Correct Answer: Option D

Explanation:
Galileo Galilei developed the early concept of inertia, which Isaac Newton later refined into his First Law of Motion.

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Question #2

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Who discovered the biological mechanism of vector cloning known as Polymerase Chain Reaction (PCR)?

A. Francis Crick

B. Kary Mullis

C. Alec Jeffreys

D. James Watson

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Correct Answer: Option B

Explanation:
Kary Mullis conceived the thermal cycling enzyme replication process to rapidly amplify specific DNA strands in 1983.

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Question #3

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Who discovered that light waves produce alternating dark and bright line bands when passing through two adjacent slits, establishing interference?

A. Christiaan Huygens

B. Thomas Young

C. Isaac Newton

D. Augustin Fresnel

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Correct Answer: Option B

Explanation:
Thomas Young conducted his famous Double-Slit Experiment in 1801, providing strong evidence for the wave theory of light.

This question belongs to: Static General Knowledge Inventions and Discoveries

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