24Sound Doppler EffectMedium1 mark
A loudspeaker moves with a constant speed relative to a stationary observer.
The loudspeaker emits a sound of constant frequency.
The frequency of sound observed depends on the speed and the direction of motion of
the loudspeaker.
Which motion of the loudspeaker will cause the highest observed frequency?
| direction of motion of loudspeaker | speed / m s | |
|---|---|---|
| A | away from observer | 10 |
| B | away from observer | 5 |
| C | towards observer | 10 |
| D | towards observer | 5 |