the ratio of the number of nuclei of X1​ to that of X2​ will be 1/e after a time

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Two radioactive materials X1​ and X2​ have decay constants 5 λ and λ, respectively. If initially they have the same number of nuclei, the ratio of the number of nuclei of X1​ to that of X2​ will be 1/e after a time
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Two radioactive materials X1​ and X2​ have decay constants 5 λ and λ, respectively. If initially they have the same number of nuclei, the ratio of the number of nuclei of X1​ to that of X2​ will be 1/e after a time respectively. If initially they have the same number of nuclei the ratio of [...]
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Tags: respectively. If initially they have the same number of nuclei , the ratio of the number of nuclei of X1​ to that of X2​ will be 1/e after a time , Two radioactive materials X1​ and X2​ have decay constants 5 λ and λ ,