11. Explain Doppler effect in sound. Obtain an expression for apparent

1.	11. Explain Doppler effect in sound. Obtain an expression for apparent frequency of sound when source andlisteners are:(a)approaching each other,(b)moving away from each other.
Answer» The speed of sound is determined by the medium in which it is traveling, and therefore is the same for a moving source. The Doppler effect is observed whenever the source of waves is moving with respect to an observer. The Doppler effect - an apparent shift in frequency for a sound wave produced by a moving source. An expression for apparant frequency of sound: (1) When both Source and listener approaching each other f' = [(v - vo)/((v + vs)]f (2) When both Source and listener moving away from each otherf' = [(v - vo)/((v - vs)]f

11. Explain Doppler effect in sound. Obtain an expression for apparent frequency of sound when source andlisteners are:(a)approaching each other,(b)moving away from each other.

Answer»

The speed of sound is determined by the medium in which it is traveling, and therefore is the same for a moving source. The Doppler effect is observed whenever the source of waves is moving with respect to an observer. The Doppler effect - an apparent shift in frequency for a sound wave produced by a moving source.

An expression for apparant frequency of sound:

(1) When both Source and listener approaching each other f' = [(v - vo)/((v + vs)]f

(2) When both Source and listener moving away from each otherf' = [(v - vo)/((v - vs)]f

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