Suppose we have two radioactive nuclei in a closed box (we can't see inside without opening it). Half life of these nuclei is 12 hrs.
- What will we find if we open the box after 12 hrs?
- What will we find if we open it after 24 hrs?
- Suppose we first look after 12 hrs and find only one nuclei has decayed; then we close the box and look again after another 12 hrs. What will we find now?
I think, if we look after 12 hrs we will find only one nucleus decayed but not sure about other two cases.
Please answer with explanation. Hope it will increase my understanding.