Question

define and expression for
doppeler effect​

Answer 1

The Doppler effect when a source is moving towards an observer moving away. Lesson Summary: The Doppler effect is a shift in the frequency of sound waves due to movement of the observer, the source or both.

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Answer 2

v = Velocity of sound or light in medium, f = Real frequency, f' = Apparent frequency. Doppler effect formula is used to find the apparent frequency and wavelength for the source moving towards the observer and away from the observer or observer moving towards the source or away from the source.

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