Photoelectric EffectHard
Question
A U238 sample of mass 1.0 g emits alpha particles at the rate 1.24 × 104 particles per second. (NA = 6.023 × 1023)
Options
A.The half life of this nuclide is 4.5 × 109 years
B.The half life of this nuclide is 9 × 109 years
C.The activity of the prepared sample is 2.48 × 104 particles/sec
D.The activity of the prepared sample is 1.24 × 104 particles/sec.
Solution
= λN = 
⇒
= 4.5 × 109 yrs.The activity = number of disintegration per second = 1.24 × 104 dps
Create a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
A nitrogen nucleus 7N14 absorbs a neutron and can transform into lithium nucleus 3Li7 under suitable conditions, after e...The stopping potential as a function of frequency of incident radiation is plotted for two different surfaces A and B. T...When the energy of the incident radiation is increased by 20%, the kinetic energy of the photoelectrons emitted from a m...What will be the ratio of the De broglie wavelengths of proton and a - particle of same kinetic energy :...In an x-ray tube the voltage applied is 20KV. The energy required to remove an electron from L shell is 19.9 KeV. In the...