Nuclear Physics And Radioactivity Question 289
Question: If the half-life of a radioactive sample is 10 hours, its mean life is [MP PET 1994]
Options:
A) 14.4 hours
B) 7.2 hours
C) 20 hours
D) 6.93 hours
Show Answer
Answer:
Correct Answer: A
Solution:
Mean life $ =\frac{Half\ life}{0.6931}=\frac{10}{0.6931}=14.4\ hours $
BETA
