JEE Main & Advanced
Physics
Nuclear Physics And Radioactivity
JEE PYQ-Nuclear Physics
question_answer
A radioactive nuclei with decay constant 0.5/s is being produced at a constant rate of 100 nuclei/s. If at t = 0 there were no nuclei, the time when there are 50 nuclei is: [JEE ONLINE 11-04-2014]
A)1s
B)
C)
D)
Correct Answer:
B
Solution :
[b] Let N be the number of nuclei at any time t then,or