Question
Medium
Solving time: 5 mins
When charcoal is prepared from a living tree, it shows a disintegration rate of 15.3 disintegrations of C per gram per minute. A sample from an ancient piece of charcoal shows C activity to be 12.3 disintegrations per gram per minute. How old is this sample? Half-life of C is 5730 y.
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Text solutionVerified
Given:
Initial activity of charcoal, disintegrations per gram per minute
Half-life of charcoal, years
Final activity of charcoal after a few years, disintegrations per gram per minute
Disintegration constant,
Let the sample take a time of t years for the activity to reach disintegrations per gram per minute.
Activity of the sample,
Initial activity of charcoal, disintegrations per gram per minute
Half-life of charcoal, years
Final activity of charcoal after a few years, disintegrations per gram per minute
Disintegration constant,
Let the sample take a time of t years for the activity to reach disintegrations per gram per minute.
Activity of the sample,
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Question Text | When charcoal is prepared from a living tree, it shows a disintegration rate of 15.3 disintegrations of C per gram per minute. A sample from an ancient piece of charcoal shows C activity to be 12.3 disintegrations per gram per minute. How old is this sample? Half-life of C is 5730 y. |
Updated On | Feb 12, 2022 |
Topic | Nuclei |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 1 |
Upvotes | 222 |
Avg. Video Duration | 2 min |