Nuclear Physics and RadioactivityHard
Question
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 of atoms that have disintegrated in the time (T2 - T1) is :-
Options
A.R1T1 − R2T2
B.R1 − R2
C.
D.(R1 − R2) T
More Nuclear Physics and Radioactivity Questions
A radioactive substance has a half-life of 60 minutes. During 3 hr. the fraction of atom that have decayed would be :...A radioactive nucleus (initial mass number A and atomic number Z) emits 3 α - particles and 2 positrons. The ratio ...From a newly formed radioactive substance (Half life 2 hours), the intensity of ratiation is 128 times the permissible s...In a photoelectric experiment, with light of wavelength λ the fastest electron has speed v. If the wavelength is ch...The figure shows the variation of photo current with anode potential for a photosensitive surface for three different ra...