Multiple choice

Doppler's effect is associated with ________.

  1. sound

  2. light

  3. magnetism

  4. electromagnetic induction

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Doppler effect describes the change in frequency/wavelength of a wave when the source and observer are in relative motion. While commonly taught with sound examples (siren pitch changing as ambulance passes), it applies to all waves including light (redshift/blueshift).