Who discovered that electrical currents alter physical molecular rotation under polarized light fields, establishing the Faraday Effect? MCQ with Answer and Explanation

Who discovered that electrical currents alter physical molecular rotation under polarized light fields, establishing the Faraday Effect?
A. James Clerk Maxwell
B. Heinrich Hertz
C. Hans Christian Ørsted
D. Michael Faraday
Answer: Option D
Solution (By JKSSB Mock Tests)
Faraday proved electromagnetism and optical light travel systems interact directly by rotating light polarization planes using magnetic fields in 1845.

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Practice More Inventions and Discoveries Questions

Question #1
The first modern steam locomotive, 'Rocket', was built by which engineer?
A. Thomas Newcomen
B. James Watt
C. Richard Trevithick
D. George Stephenson

Correct Answer: Option D


Explanation:
George Stephenson and his son Robert built the 'Rocket' in 1829, setting the standard for future steam railways.

Question #2
Who discovered that electrical currents travel along the exterior surface of a conductor rather than uniformly through its core?
A. Nikola Tesla
B. Michael Faraday
C. Heinrich Hertz
D. James Clerk Maxwell

Correct Answer: Option B


Explanation:
Michael Faraday discovered the skin effect and structural shielding principles, leading to the creation of the Faraday Cage.

Question #3
Who discovered that elements display periodic physical attributes when arranged strictly by atomic weight values?
A. Henry Moseley
B. Dmitri Mendeleev and Julius Lothar Meyer
C. Antoine Lavoisier
D. John Dalton

Correct Answer: Option B


Explanation:
Mendeleev and Meyer independently formulated structural periodic tables, but Mendeleev gained fame by accurately predicting undiscovered elements.