The phenomenon of radioactivity was first discovered by
[amp_mcq option1=”Marie Curie” option2=”Henri Becquerel” option3=”Frederick Soddy” option4=”Ernest Rutherford” correct=”option2″]
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UPSC Geoscientist – 2023
The phenomenon of radioactivity was first discovered by French physicist Henri Becquerel in 1896. He observed that uranium salts spontaneously emitted radiation that could expose photographic plates, even when the salts were wrapped in opaque paper.
Henri Becquerel’s accidental discovery of radiation from uranium marked the beginning of the study of radioactivity.