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Railways PYQCBT 1 2016

RRB NTPC · Question 43

Who discovered radioactivity?

  1. Max Planck

  2. James Clerk Maxwell

  3. Henri Becquerel

  4. Heinrich Hertz

Show answer & explanation

Answer: (C) Henri Becquerel

Explanation

Henri Becquerel discovered radioactivity in 1896, when uranium salts fogged photographic plates without exposure to light. He shared the 1903 Nobel Prize in Physics with Marie and Pierre Curie.