Question : Radioactivity was discovered by
Option 1: Rutherford
Option 2: Henri Becquerel
Option 3: Roentgen
Option 4: Einstein
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Correct Answer: Henri Becquerel
Solution : The correct answer is Henri Becquerel
Henri Becquerel Discovers Radioactivity. In one of the most well-known accidental discoveries in the history of physics, on an overcast day in March 1896, French physicist Henri Becquerel opened a drawer and discovered spontaneous radioactivity.
Using a method similar to that of Roentgen, Becquerel surrounded several photographic plates with black paper and florescent salts.
With the intention of further advancing the study of x-rays, Becquerel intended to place the concealed photographic paper in the sunlight and observe what transpired. Unfortunately, he had to delay his experiment because the skies over Paris were overcast.
Final answer is Henri Becquerel
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Question : Who discovered electron?
Option 1: E. Goldstein
Option 2: J. J. Thomson
Option 3: Ernest Rutherford
Option 4: J. Chadwick
Question : Which scientist discovered the radioactive element radium?
Option 1: Marie Curie
Option 2: Isaac Newton
Option 3: Albert Einstein
Option 4: Benjamin Franklin
Question : Who discovered Photon?
Option 1: George Crum
Option 2: Albert Einstein
Option 3: Henry Cavendish
Option 4: Humphry Davy
Question : Who discovered X-rays?
Option 1: Wilhelm Conrad Rontgen
Option 3: Samuel Cohen
Option 4: Edward Taylor
Question : The famous scientist, Albert Einstein, was inspired by whose idea of non-violence?
Option 1: Mahatma Gandhi
Option 2: Vardhamana Mahavira
Option 3: Gautama Buddha
Option 4: Dr. B. R. Ambedkar
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