Question

Radioactivity was discovered by

• A. Rutherford
• B. Becquerel
• C. Bohr
• D. Madame Curie

Answer 1

The correct option is B

Becquerel

The explanation for the correct option.

Option B.

1. In 1896, Henri Becquerel researched the newly founded $X-$rays, which led to research into how light affects uranium salts.
2. He found that uranium salts discharge penetrating radiation that can be recorded on a photographic surface by accident.
3. Further research revealed that this radiation was not $X-$ray radiation, but rather a new phenomenon known as radioactivity.

Therefore, radioactivity was discovered by Becquerel. Hence, Option B is correct.