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

Question

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

A. Isaac Newton

B. Augustin Fresnel

C. Thomas Young

D. Christiaan Huygens

Answer: Option C

Solution (By JKSSB Mock Tests)

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

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The invention of the carbon filament telephone transmitter (microphone) that improved long-distance audio was done by whom?

A. Thomas Edison

B. Nikola Tesla

C. David Edward Hughes

D. Alexander Graham Bell

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Correct Answer: Option A

Explanation:
Thomas Alva Edison invented the highly efficient carbon microphone, which became standard for telephone transmitters for decades.

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Question #2

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The fundamental principle of fluid mechanics stating that internal pressure drops as fluid velocity increases was discovered by whom?

A. Daniel Bernoulli

B. Archimedes

C. Isaac Newton

D. Blaise Pascal

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Correct Answer: Option A

Explanation:
Daniel Bernoulli published Bernoulli's Principle in his book 'Hydrodynamica' in 1738.

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Question #3

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The invention of the common electronic operating layout known as the Graphical User Interface (GUI) was pioneered by which lab?

A. Microsoft

B. IBM Research

C. Apple Computers

D. Xerox PARC

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Correct Answer: Option D

Explanation:
Xerox Palo Alto Research Center (PARC) engineered the Alto computer featuring mouse-driven windows, menus, and file icons.

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