Who discovered the law of the photoelectric effect?

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OSSC Soil Conservation Extension Worker Official Paper I 11 Feb 2022
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  1. Albert Einstein 
  2. Antonie van Leeuwenhoek
  3. Louis Pasteur
  4. Rudolf Virchow

Answer (Detailed Solution Below)

Option 1 : Albert Einstein 

Detailed Solution

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The correct answer is Albert Einstein.

Key Points

  • Albert Einstein was awarded the Nobel Prize in Physics in 1921 for his explanation of the photoelectric effect.
  • The photoelectric effect is the emission of electrons or other free carriers when light shines on a material.
  • Einstein's work on the photoelectric effect provided crucial evidence for the quantum theory of light.
  • His discovery helped in the development of quantum mechanics and has numerous applications in modern technology, such as solar cells and photoelectric sensors.

Additional Informatio

  • Antonie van Leeuwenhoek – Known as the "Father of Microbiology," he was the first to observe bacteria and protozoa using a self-made microscope. His discoveries laid the foundation for microbiology.
  • Louis Pasteur – A French scientist famous for developing pasteurization, vaccines for rabies and anthrax, and the germ theory of disease, which revolutionized medicine and microbiology.
  • Rudolf Virchow – A German physician known as the "Father of Cellular Pathology," he proposed that all cells arise from pre-existing cells (Omnis cellula e cellula) and contributed to the development of cell theory.
Latest OSSC Soil Conservation Extension Worker Updates

Last updated on Apr 9, 2025

-> OSSC Soil Conservation Extension Worker Merit List has been released for Prelims (2023 cycle). 

-> A total number of 324 Vacancies have been announced for the post of Soil Conservation Extension Worker under the Directorate of Soil Conservation and Watershed Development.

-> Eligible candidates had registered from 27th November 2024 to 26th December 2024. The applications for the post will be accepted in online mode only.

-> Candidates must refer to the OSSC Soil Conservation Extension Worker Previous Year Papers to analyze the trend of the questions for the examination. 

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