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CGP EDU Academic Team
Published on: August 13, 2026
In a radioactive decay process, the activity is defined as 
, where N(t) is the number of radioactive nuclei at time t. Two radioactive sources, S 1 and S 2 have same activity at time t = 0. At a later time, the activities of S 1 and S 2 are A 1 and A 2 , respectively. When S 1 and S 2 have just completed their 3 rd and 7 th half-lives, respectively, the ratio A 1 /A 2 is__________.
Text Solution
Verified by ExpertsThe correct answer is:
16
(16)
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