MHT CET 2024 Physics question
Half-lives of two radioactive elements A and B are 30 minute and 60 minute respectively. Initially the samples have equal number of nuclei. After 120 minute the ratio of decayed numbers of nuclei of B to that A will be
Answer: (C)
Solution
Number remaining after half-lives is , so the number decayed is . For A: , remaining , decayed . For B: ,
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