| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.HL.TZ2.28 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 28 | Adapted from | N/A |
Question
The decay constant of a radioactive isotope with half-life T is defined as
A. \(\frac{T}{{\ln 2}}\).
B. the rate of decay of one nucleus of the isotope per second.
C. Tln2.
D. the probability of decay of one nucleus of the isotope per unit of time.
Markscheme
D
Examiners report
[N/A]
Syllabus sections
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