Question
Medium
Solving time: 3 mins
The half-life of a radioactive element is days. The fraction left after 19 days will be
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Text solutionVerified
In time
In another half-life,(ie, after 2 half-lives)
After yet another half-life ,(ie, after 3 half-lives)
and so on.
Hence, after half-lives
where total time of half-lives.
Here,
The fraction left
=0.031
In another half-life,(ie, after 2 half-lives)
After yet another half-life ,(ie, after 3 half-lives)
and so on.
Hence, after half-lives
where total time of half-lives.
Here,
The fraction left
=0.031
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Question Text | The half-life of a radioactive element is days. The fraction left after 19 days will be
|
Topic | Nuclei |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 |
Upvotes | 125 |