Practice question · Select all that apply
Which statements about the Doppler effect are correct?
Hints
- What matters is the relative motion, not who is moving.
- The effect is not restricted to any one kind of wave.
Show the answer
- A. Observed frequency decreases when source moves away
- B. Observed frequency increases when source approaches observer
- C. Effect is absent when source and observer both move at the same velocity
Why
The Doppler effect applies to all waves including light. Relative motion is what matters; equal velocities no shift.
Practise Sound Waves and the Doppler Effect
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