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
If a nucleus x emits one α particle and one β (negative β) particle in succession, then the daughter nucl...The energy difference between the first two levels of hydrogen atom is 10.2 eV. What is the corresponding energy differe...The surface of a metal is illuminated with the light of 400 nm. The kinetic energy of the ejected photoelectrons was fou...X-ray is an electromagnetic radiation, so X-ray photons carry :...The given graph shows the variation of √f vs z for characteristics X-rays. Lines 1, 2, 3, 4 shown in the graph cor...