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Doppler effect (the sound source moving towards observer)

  1. Aug 8, 2014 #1
    1. The problem statement, all variables and given/known data

    the observer is stationary , but the sound source is moving towards the observer , i was told that the speed of sound relative to the observer doesnt change. why is it so ? in my opinion, the speed of sound relative to observer changed . because of v= f x (lambda) , as the frequency of sound is fixed , but the wavelength of sound waves now changed , (the wavelength now become shorter) , so the speed of sound realtive to the obersver is reduced . am i correct ?

    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Aug 8, 2014 #2

    Simon Bridge

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    The speed of sound in a medium is a property of the medium, not the source or the observer.
     
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