GRE Physics GR 1777, Problem 030 Solution

GRE Physics GR 1777 Problem Solution

030. Optics and Wave Phenomena (Doppler effect)

You should know about

The observed frequency is given by

where

  • : 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.

Solution

Answer

(E) 612 Hz

Leave a Reply