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AIPMT 2008 Physics and Chemistry Paper

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Question : 42 of 100
 
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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 of X2 will be ‌
1
e
 after a time -
Validate
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