NEET Physics Nuclei Questions Solved

Two radioactive substances A and B have decay constants 5λ and λ respectively. At t=0 they have the same number of nuclei. The ratio of number of nuclei of A to those of B will be 1e2 after a time interval

(a) 14λ                                          (b) 4λ

(c) 2λ                                            (d) 12λ

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