NEET Physics Nuclei Questions Solved

AIIMS - 2007
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 after a time interval [AIIMS 2007; CBSE PMT 2008; EAMCET 2009; WB-JEE 2012] (b) 4λ (c) 2λ 2λ

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