Question

Two redioactive materials X_(1)andX_(2) have decay constants 10lamdaandlamda, respecitvely. If initially they have the same number of nuclei, then the ratio of the number of nuclei of X_(1) to that of X_(2) will be 1/e after a time

Answer 1

Answer:

Nx1(t)Nx2(t)Ie

N0e−10λtN0e−λt=Ie

(Initially, both have same number of nuclei say N0)

or e=eλt/e−10λt or e=e9λt

Answer 2

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