Class 12 NEET Physics Atoms and Nuclei Questions Part 2

© examsiri.com
Question : 33 of 79
 
Marks: +1, -0
Radioactive material 'A' has decay constant '8λ' ad material 'B' has decay constant 'λ'.Initially they have same number of nuclei.After what time ,the ratio of number of nuclei of material 'B' to that 'A' will be
1
e
?
[NEET 2017]
Go to Question: