Question:easy

Who discovered radioactivity?

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Think of the French physicist who studied uranium salts and photographic plates in 1896.

Updated On: Jul 16, 2026

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Solution and Explanation

Henri Becquerel is credited with the discovery of radioactivity.

In 1896, Becquerel studied uranium compounds and their effect on photographic film.
He noticed the film turned dark even when kept away from light, proving the uranium itself was emitting energy.
This spontaneous emission of energy from an element is called radioactivity.
His finding opened the door for Marie Curie and Pierre Curie to study radium and polonium.
Becquerel received the 1903 Nobel Prize in Physics along with the Curies.

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