JEE Main & Advanced
Physics
Nuclear Physics And Radioactivity
JEE PYQ-Nuclear Physics
question_answer
Half-lives of two radioactive elements A and B are 20 minutes and 40 minutes, respectively. Initially, the samples have equal number of nuclei. After 80 minutes , the ratio of decayed numbers of A and B nuclei will be :- [JEE MAIN - I 3-4-2016]