Question
Tue June 07, 2011 By: Prashant Jain

The half life of a radioactive substance is 20 minutes.What is the approximate time interval t2 - t1 between the time t2 when 2/3 of it has decayed and time t1 when 1/3 of it had decayed?

Expert Reply
Mon June 13, 2011
Ask the Expert