Nuclear Physics And Radioactivity Question 271
Question: The half-life of a radioactive element which has only $ \frac{1}{32} $ of its original mass left after a lapse of 60 days is [MP PET 1992; DPMT 2002]
Options:
A) 12 days
B) 32 days
C) 60 days
D) 64 days
Show Answer
Answer:
Correct Answer: A
Solution:
$ \frac{N_{0}}{32}=N_{0}{{( \frac{1}{2} )}^{60/T}}\Rightarrow 5=\frac{60}{T}\Rightarrow T=12 $ days
BETA
