NCERT · Class 12 · Physics · NucleiThe phenomenon of radioactivity was discovered by:
Step-by-Step Solution
Radioactivity was discovered by Henri Becquerel in 1896 while studying uranium salts.
Detailed Options Breakdown
Option : Marie Curie
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Nuclei.
Option 1: Ernest Rutherford
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Nuclei.
Option 2: Henri Becquerel (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 3: J.J. Thomson
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Nuclei.
💡 Study Guide: This question tests core syllabus concepts from Nuclei. For formulas, key summaries, and mock exam reference guides, read the full Nuclei Revision Notes.