Question

The half life of
half life at a radioactive substance is_______
while it was disintegrated almost 85%
after 40 minutes.
​

Answer 1

Answer:

N⟶0,t⟶∞

Explanation:

Time taken to disintegrate completely by a substance is infinity  as long as log  

N

N  

0

​  

 

​  

=λt

⟹   log  

0

N  

0

​  

 

​  

=λt  

      log∞=λt

Hence, when  N⟶0,t⟶∞