Question

52. A radioactive substance can decay by
emission of either a or B particles. For these two
decays, the half-lives are 12s and 60s respectively.
On an average, half of the nuclei will decay in
(A) 72s
(B) 6.6S
(C) 36S
(D) 10s​

Answer 1

Answer:

on an average the half of the nuclei will decay in

c)36s