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Class 12 NEET Physics Atoms and Nuclei Questions Part 2

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Question : 79 of 79
 
Marks: +1, -0
Two radioactive materials X1 and X2 have decay constants 5λ and λ respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of X1 to that X2 will be
1
e
 after a time
(2008)
Validate
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