Nuclear Physics And Radioactivity Question 499
Question: Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion years ago. The other was created in a nuclear reactor 5 minutes ago. The probability of decay during the next time is
Options:
A) Different for each nucleus
B) Nuclei created in explosion decays first
C) Nuclei created in the reactor decay first
D) Independent of the time of its creation
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ \lambda =\frac{0.693}{{T_{1/2}}}=\frac{0.693}{77} $ $ =9\times {{10}^{-3}}/day $ .
BETA
