| Date | May 2015 | Marks available | 1 | Reference code | 15M.1.HL.TZ1.14 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 14 | Adapted from | N/A |
Question
A car horn emits sound of frequency ƒ. While the horn is sounding, the car moves in a straight line towards a stationary observer. The speed of the car is 0.10v where v is the speed of sound. What is the frequency of the sound of the horn heard by the observer?
- \(\frac{f}{{0.90}}\)
- 1.1 ƒ
- \(\frac{f}{{1.1}}\)
- 0.90 ƒ
Markscheme
A
Examiners report
[N/A]
