| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.HL.TZ2.27 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 27 | Adapted from | N/A |
Question
A train is approaching an observer with constant speed
\[\frac{c}{{34}}\]
where c is the speed of sound in still air. The train emits sound of wavelength λ. What is the observed speed of the sound and observed wavelength as the train approaches?
Markscheme
A
Examiners report
[N/A]
Syllabus sections
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