Questions
In a mean life of a radioactive sample
a
About 1/3 of substance disintegrates
b
About 2/3 of the substance disintegrates
c
About 90% of the substance disintegrates
d
Almost all the substance disintegrates
detailed solution
Correct option is B
By using N=N0e-λt and t=τ=1λSubstance remains N=N0e=0.37N0≃N03∴Substance disintegrated =N0-N03=2N03Talk to our academic expert!
Similar Questions
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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