To Choose: The correct option.
Answer to Problem 6STP
Correct option is D.
One-eighth of the fraction of the radioactive material that will be left after 30 years.
Explanation of Solution
Give info:
Half-life of radioactive material = 10 years.
Total number of years = 30 years
Formula used:
Calculation:
After each half-life, the number of remaining undecayed nuclei decrease rapidly.
- After one half-life the number of remaining undecayed nuclei reduced to half.
- And after two half-lives the number of remaining undecayed nuclei reduced to one-fourth.
- And after 3 half-lives the number of remaining undecayed nuclei reduced to one-eighth.
Hence, after 30 years, only one-eighth of the fraction of the radioactive material that will be left.
Conclusion:
Thus, one-eighth of the fraction of the radioactive material that will be left after 30 years.
Chapter 20 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
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