Question

42.
Half-life of a radioactive substance A is two times the half-
life of another radioactive substance B. Initially, the number
of nuclei of A and B are NA and Ng respectively. After three
half-lives of A, the number of nuclei of both are equal. Then
the ratio of Na/Ne is
(1) 1/4
(2) 1/8
(3) 1/3
(4) 1/6​

Answer 1

Answer:

2. is the correct answer

Explanation:

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