Questions
At any instant the ratio of the amount of radioactive substances is 2 : 1. If their half-lives be respectively 12 and 16 hours, then after two days, what will be the ratio of the substances?
detailed solution
Correct option is A
Number of half-lives in two days four substance 1 and 2 respectively are n1=2 x 2412=4 and n2=2 x 241.6=3By using N=N012n⇒N1N2=N01N02x12n112n2=21x124123=11Talk to our academic expert!
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The half life period of a radioactive element X is same as the mean life time of another radioactive element Y. Initially both of them have the same number of atoms. Then
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