Nuclear Physics And Radioactivity Question 361
Question: The decay constant of a radioactive element is $ 1.5\times {{10}^{-9}} $ per second. Its mean life in seconds will be [MP PET 2001]
Options:
A) $ 1.5\times 10^{9} $
B) $ 4.62\times 10^{8} $
C) $ 6.67\times 10^{8} $
D) $ 10.35\times 10^{8} $
Show Answer
Answer:
Correct Answer: C
Solution:
Mean life $ =\frac{1}{\lambda } $ $ =6.67\times 10^{8}\sec . $
BETA
