Nuclear Physics And Radioactivity Question 373
Question: The half-life of $ ^{215}At $ is $ 100\mu s $ . The time taken for the radioactivity of a sample of $ ^{215}At $ to decay to 1/16th of its initial value is [IIT-JEE (Screening) 2002]
Options:
A) $ 400,\mu s $
B) $ 6.3,\mu s $
C) $ 40,\mu s $
D) $ 300\mu s $
Show Answer
Answer:
Correct Answer: A
Solution:
The radioactivity of a sample decays to $ \frac{1}{16}th $ of its initial value in four half lives.
BETA
