NEET 2016 Physics and Chemistry Paper 2
© examsiri.com
Question : 51 of 90
Marks:
+1,
-0
The half-life of a radioactive substance is 30 minutes. The time (in minutes) taken between 40 % decay and 85 % decay of the same radioactive substance is :
[NEET 2016 P2]
Go to Question: