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Ultraviolet light causing emission was studied in detail by:
AHallwachs and Lenard
BNewton and Hooke
CBohr and Sommerfeld
DCurie and Becquerel
Answer & Solution
Correct answer: A. Hallwachs and Lenard
1. Hertz noticed the effect but did not pursue it.
2. Two later experimenters studied it through the eighteen nineties.
3. They were Hallwachs and Lenard.
4. So the answer is Hallwachs and Lenard.
_Source: NCERT Class 12 Physics, Ch 11 'Dual Nature of Radiation and Matter'_
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