Doppler effect in sound wave.

Lesson 17 of 21 • 3 upvotes • 9:58mins

Rajesh Kumar

Doppler Effect related by Apparent frequency change in frequency due to relative motion between source and observer. there are four conditions here I discussed in this lesson. first of all relative motion of source with respect to medium .source moving towards observer and source moving away from observer. second conditions observer moving towards source and observer go away from the source . the relative motion between source and observer always given with respect to medium .dopller effects also relate with Pitch .when train approaches the platform the person or the receiver received high pitch. and when train passes through and go away from the observer the observer receives sudden fall in the loudness and pitch. Doppler Effect clearly defined or related to the Apparent frequency which is due to the relative motion of source or observer with respect to medium in the case of Doppler Effect Apparent frequency is equal to Wave velocity + velocity of observer divided by speed of wave - speed of source .when source moving towards observer then we take positive sign and when source or observer go away then this then we take negative sign.