Answer to Question #164233 in Optics for Ateufack Zeudom

Question

 A train, sounding its whistle, is travelling along a long section of track and passes under a low bridge.

     Explain how the frequency of the note heard by an observer standing on the bridge differs from the

     frequency emitted. 

Answer 1

Answer

According to physics

The Doppler effect is an change in the observed frequency of a sound due to motion of either the source or the observer.

this effect is easily observed for a stationary source and moving observer. For an example, if you ride a train past a stationary warning horn, you will hear the horn’s frequency shift from high to low as you pass by. The actual change in frequency due to relative motion of source and observer is called a Doppler shift.

the changement in frequency of the note heard by an observer standing on the bridge differs from the

frequency emitted is observed due to Doppler effect.