Q39
Half-life of a radioisotope is 4 × 108 years. If there are 103 radioactive nuclei in a sample today, the number of such nuclei in the sample 4 × 109 years ago were
A.
128 × 103
B.
256 × 103
C.
512 × 103
D.
1024 × 103
AnswerAnswer: Option D
Solution
Answer: Option D
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