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. Christiaan Huygens

B. Isaac Newton

C. Thomas Young

D. Augustin Fresnel

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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Who discovered that biological neural transmission passes across physical cell junctions via specialized chemical messengers, founding Neurotransmission?

A. Santiago Ramón y Cajal

B. Otto Loewi and Henry Dale

C. Willem Einthoven

D. Camillo Golgi

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Correct Answer: Option B

Explanation:
Loewi isolated acetylcholine from frog heart tracking setups, sharing a Nobel Prize with Dale for chemical nerve impulse transmission.

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Question #2

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The invention of the common chemical processing method known as the Ostwald Process optimized production of what?

A. Ammonia

B. Phosphoric Acid

C. Nitric Acid

D. Sulfuric Acid

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Correct Answer: Option C

Explanation:
Wilhelm Ostwald patented the catalytic oxidation of ammonia over platinum mesh sheets in 1902, securing key munitions chemicals.

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Question #3

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The invention of the common automotive safety equipment known as the three-point seatbelt was patented by whom?

A. Henry Ford

B. Karl Benz

C. Nils Bohlin for Volvo

D. Garrett Morgan

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Correct Answer: Option C

Explanation:
Swedish engineer Nils Bohlin developed the modern cross-lap safety harness configuration in 1959, saving countless lives across traffic boundaries.

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