Explain dopplers effect

1.	Explain dopplers effect
Answer» According to Doppler effect whenever there is a relative motion between a source of sound and the listener the frequency of sound received by the listener is different from the actual frequency of sound emitted by the source.<br>\tDoppler Effect is the phenomenon of motion-related frequency change.\tConsider if a truck is coming from very far off location as it approaches near our house, the sound increases and when it passes our house the sound will be maximum. And when it goes away from our house sound decreases.\tThis effect is known as Doppler Effect.\tA person who is observing is known as Observer and object from where the sound wave is getting generated it is known as Source.\tWhen the observer and source come nearer to each other as a result waves get compressed. Therefore wavelength decreases and frequency increases.<br>Effect caused by sudden change in pitch

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