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  • Sound Waves and Properties
  • Which principle is employed by the traffic police to meas...
Multiple choice

Which principle is employed by the traffic police to measure the speed of the vehicles?

  1. Resonance

  2. Doppler effect

  3. Beats

  4. Treble

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

Doppler effect is the method employed by the traffic police to measure the speed of the vehicles.

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