Tamilnadu BoardEnglish MediumSTD 10ScienceNuclear Physics1 Mark
Question
Define ‘One curie’.
✓
Answer
It is defined as the quantity of a radioactive substance which undergoes $3.7 \times 10^{10}$ disintegrations in one second. This is actually close to the activity of 1 g of radium 226.
Curie $=3.7 \times 10^{10}$ disintegrations per second.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.