GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Newton
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Henry
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Rutherford
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Becquerel
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Detailed explanation-1: -When Henri Becquerel investigated the newly discovered X-rays in 1896, it led to studies of how uranium salts are affected by light. By accident, he discovered that uranium salts spontaneously emit a penetrating radiation that can be registered on a photographic plate.
Detailed explanation-2: -The becquerel (symbol: Bq) is the SI unit of radioactivity and is defined as one nuclear disintegration per second 1; it officially replaced the curie (Ci), the unit in the superseded cgs system, in 1975.
Detailed explanation-3: -Soon Ernest Rutherford separated the new rays into alpha, beta and gamma radiation, and in 1902 Rutherford and Frederick Soddy explained radioactivity as a spontaneous transmutation of elements.
Detailed explanation-4: -The becquerel (English: /bɛkəˈrɛl/; symbol: Bq) is the unit of radioactivity in the International System of Units (SI). One becquerel is defined as the activity of a quantity of radioactive material in which one nucleus decays per second.