CBSE Class 12-science Answered
Define decay constant of a radioactive sample. Which of the following radiation α-rays, β-rays and y-rays, (i) Are similar to x - rays? (ii) Are easily absorbed by matter?
Asked by Topperlearning User | 09 Jul, 2014, 04:26: PM
Expert Answer
Radioactive decay constant (λ) is the reciprocal of time during which the number of atoms in the radioactive substance reduced to 36.8% of the original number of atoms in it.
(i) Y-rays are similar to X-rays
(ii) Penetration power of α-ray is less then that of β and Y -rays so Y-rays are easily absorbed by matter.
Answered by | 09 Jul, 2014, 06:26: PM
Concept Videos
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Radioactivity - Part 1
This video explains the process of radioactivity in detail. -
Radioactivity - Part 2
This video gexplains the types of radioactive decays -
Radioactivity
Radioactivity
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