Who discovered that light waves exhibit distinct transverse oscillation directions when passing through tourmaline crystals, establishing Polarization? MCQ with Answer and Explanation

Question

Who discovered that light waves exhibit distinct transverse oscillation directions when passing through tourmaline crystals, establishing Polarization?

A. Thomas Young

B. Etienne-Louis Malus and Erasmus Bartholin

C. Isaac Newton

D. James Clerk Maxwell

Answer: Option B

Solution (By JKSSB Mock Tests)

Bartholin discovered double refraction in Iceland spar, and Malus formalized optical polarization laws by reflection properties.

This question belongs to: Static General Knowledge Inventions and Discoveries

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The invention of the common synthetic fiber Polyester (PET) was achieved by which research team?

A. Leo Baekeland

B. Wallace Carothers

C. John Rex Whinfield and James Tennant Dickson

D. Stephanie Kwolek

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Correct Answer: Option C

Explanation:
Whinfield and Dickson patented polyethylene terephthalate (Terylene/Polyester) in England in 1941.

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Question #2

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The invention of the mercury barometric tube directly led to the recognition of what physical condition?

A. Absolute humidity

B. Vacuum

C. Capillary action

D. Hydrostatic paradox

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Correct Answer: Option B

Explanation:
Torricelli's barometer left an empty space at the top of the glass tube, creating the first recognized sustained artificial vacuum.

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Question #3

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The law of gas pressure stating that total pressure equals the sum of partial pressures was formulated by whom?

A. Robert Boyle

B. Joseph Louis Gay-Lussac

C. Jacques Charles

D. John Dalton

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Correct Answer: Option D

Explanation:
John Dalton formulated Dalton's Law of Partial Pressures in 1801 as part of his atmospheric research.

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