Nuclear Physics and RadioactivityHard
Question
If half-life of a radioactive substance is 60 minutes, then the percentage decay in 4 hours is :
Options
A.50%
B.71%
C.85%
D.93.7%
More Nuclear Physics and Radioactivity Questions
The initial active nuclei of two radioactive substances are same and their half lives are 1 year and 2 year respectively...The radioactivity of a sample is R1 at a time T1 and R2 at a time T2. If the mean life of the specimen is T, the number ...If radius of the 2713Al nucleus is taken to be RAl then the radius of 12553Te nucleus is nearly :...Which of the following nucleus is fissionable by slow neutrons :-...In hydrogen and hydrogen like atoms, the ratio of difference of energies E2n - En and E2n En varies with its atomic numb...