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
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Answer:
on an average the half of the nuclei will decay in
c)36s
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