Interpretation:
The remaining mass of sample of
Concept introduction:
- Unstable nuclei emit radiation spontaneously to become stable nuclei by losing energy. This process of emission of radiation by unstable nuclei is known as radioactive decay.
- Radioactive decay is in the first order kinetics. Rate of radioactive decay at a time t is,
Answer to Problem 19.3KSP
The correct option is option (b)
Explanation of Solution
Reason for correct option
To find: The remaining mass of sample of
The remaining mass of sample of
The remaining mass of sample of
Given,
Suppose the number of radioactive nuclei at time zero is
Radioactive nuclei at time zero and time t are the initial concentration and the final concentration.
So the equation can also be written as,
Therefore,
The remaining mass of sample of
The remaining mass of sample of
Hence the correct option for the remaining mass of sample of
Reasons for incorrect options:
Write all the remaining mass of sample of
(a)
(c)
(d)
(e)
The remaining mass of sample of
So, this value of remaining mass of sample of
Hence the incorrect options are a, c, d and e.
The correct option for remaining mass of sample of
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Chapter 19 Solutions
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