As an ambulance moves away from a stationary listener, the pitch heard is:

  1. higher than the actual frequency
  2. zero
  3. lower than the actual frequency
  4. unchanged
Answer

C) lower than the actual frequency

Wavefronts are stretched out behind the source. SLO P-11-D-02 · Understanding

Physics MCQ · More Wave Intensity and the Doppler Effect MCQs · Practise