A car is moving with a constant velocity straight towards a man who is standing in the centre of the road. The driver uses the car’s horn to give a warning. The horn produces a sound wave with a constant frequency. The frequency of the sound received by the man is not the same as the frequency of the sound produced by the horn. Which statement is correct?
- AThe frequency of the sound emitted by the horn is greater than the frequency of the sound heard by the man.
- BThe frequency of the sound heard by the man depends on the distance between the car and the man.
- CThe sound waves continually accelerate as they move from the horn to the man.
- DThe wavelength of the sound heard by the man is less than the wavelength of the sound emitted by the horn.