Physics · Nuclear Physics
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The half-life of a particular element is 6 days What percent of the original sample of the element remains after 24 days?
- A
100%
- B
50%
- C
25%
- D
12.5%
- E
6.25%
In this case, the half-life of the element is 6 days. This means that after 24 days (4 half-lives), 6.25% of the original sample remains
Half-life Percentage of original sample remaining
1 50%
2 25%
3 12.5%
4 6.25%
The other options are not correct because they do not match the amount of the original sample that remains after 4 half-lives.
After 4 half-lives, only 6.25% of the original sample remains. Therefore, this option is not correct.
After 2 half-lives, 25% of the original sample remains. Therefore, this option is not correct.
After 3 half-lives, 12.5% of the original sample remains. Therefore, this option is not correct.
After 4 half-lives, only 6.25% of the original sample remains. Therefore, this option is not correct.
In this case, the half-life of the element is 6 days. This means that after 24 days (4 half-lives), 6.25% of the original sample remains
Half-life Percentage of original sample remaining
1 50%
2 25%
3 12.5%
4 6.25%
The other options are not correct because they do not match the amount of the original sample that remains after 4 half-lives.
Tagged under Physics · Nuclear Physics · 2011