Nuclear Physics And Radioactivity Question 324
Question: A radioactive sample with a half-life of 1 month has the label: ?Activity=2 micro curies on 1.8.1991.’’ What will be its activity two months later [CBSE PMT 1992]
Options:
A) 1.0 micro curies
B) 0.5 micro curies
C) 4 micro curies
D) 8 micro curies
Show Answer
Answer:
Correct Answer: B
Solution:
In two half lives, the activity becomes one fourth.
BETA
