| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.HL.TZ2.40 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 40 | Adapted from | N/A |
Question
Two samples X and Y of different radioactive isotopes have the same initial activity. Sample X has twice the number of atoms as sample Y. The half-life of X is T. What is the half-life of Y?
A. 2T
B. T
C. \(\frac{T}{2}\)
D. \(\frac{T}{4}\)
Markscheme
C
Examiners report
[N/A]
Syllabus sections
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