| Date | May 2019 | Marks available | 1 | Reference code | 19M.1.SL.TZ1.19 |
| Level | Standard level | Paper | Paper 1 | Time zone | 1 |
| Command term | Question number | 19 | Adapted from | N/A |
Question
In science, models are extensively used to study real life situations.
A person X on the beach wants to reach a person Y in the sea in the shortest possible time. The speed of person X on land is different from the speed of person X in the water. Which physical phenomenon will best model the path with the least time?
A. Conservation of momentum
B. Diffraction
C. Flow of charge in a conductor
D. Refraction
Markscheme
D
Examiners report
[N/A]
