Question

what is Doppler effect ?​

Answer 1

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Doppler Effect refers to the change in wave frequency during the relative motion between a wave source and its observer . For insance, when a sound object moves towards you, the frequency of the sound waves increases, leading to a higher pitch.

Answer 2

(☞ﾟ∀ﾟ)☞Answer

In fact, any relative motion between the two will cause a Doppler shift/ effect in the frequency observed. ... A high frequency corresponds to a high pitch. So while the siren produces waves of constant frequency, as it approaches us the observed frequency increases and our ear hears a higher pitch..

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