Nuclear Physics and RadioactivityMedium
Question
The decay constant of a radio active substance is 0.173 (years)-1. Therefore:
Options
A.Nearly 63% of the radioactive substance will decay in (1/0.173) year.
B.half life of the radio active substance is (1/0.173) year.
C.one -forth of the radioactive substance will be left after nearly 8 years.
D.half of the substance will decay in one average life time.
Solution
Use approximation ln2 = 0.692
Given λ = 0.173
T1/2 =
Also N0 − N = N0 e−λt
For t =
N0 − N =
= 0.37
Given λ = 0.173
T1/2 =
Also N0 − N = N0 e−λt
For t =
N0 − N =
= 0.37Create a free account to view solution
View Solution FreeMore Nuclear Physics and Radioactivity Questions
in a characteristic X - ray spectra of some atom superimposed on continuous X - ray spectra...The binding energy of deuteron is 2.2 MeV and that of 24He is 28 MeV. If two deuteron are fused to from one 24He than th...The half life of a radioactive element is 30 days, in 90 days the percentage of disintegrated part is :-...In a material medium, when a positron meets an the electrons both particles annihilateleading to the emission of two gam...Four statements are given ( $A$ is mass number):A. The volume of a nucleus is proportional to $A^{1/3}$.B. The volume of...