Nuclear Physics And Radioactivity Question 394
Question: Mean life of a radioactive sample is 100 seconds. Then its half-life (in minutes) is [KCET 2005]
Options:
A) 0.693
B) 1
C) 10-4
D) 1.155
Show Answer
Answer:
Correct Answer: D
Solution:
Mean life $ (T)=1/\lambda $ = 100 second Half-life = $ \frac{0.693}{\lambda }=\frac{0.693\times 100}{60} $ =1.155 min.
BETA
