GRE Physics GR 1777, Problem 030 Solution

GRE Physics GR 1777 Problem Solution

030. Optics and Wave Phenomena (Doppler effect)

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The observed frequency is given by


  • : emitted frequency 
  • : propagation speed of waves in the medium
  • : speed of the receiver relative to the medium, added if the receiver is moving towards the source, subtracted if the receiver is moving away from the source
  • : speed of the source relative to the medium, added if the source is moving away from the receiver, subtracted if the source is moving towards the receiver.



(E) 612 Hz

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