28Sound Doppler EffectHard1 mark
A car is driving along a straight road while emitting a sound of a constant frequency. There is a stationary observer at each location X, Y and Z.
From X to Y, the car accelerates uniformly from rest up to a high speed.
From Y to Z, the car continues at this constant high speed.
Which observer will hear the highest frequency of sound and what is the position of the car when this frequency is heard by the observer?
| observer | position of car | |
|---|---|---|
| A | at X | between X and Y |
| B | at Y | between X and Y |
| C | at Y | between Y and Z |
| D | at Z | between Y and Z |