Mention two cases in which there is no Doppler effect in sound?
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Answered by
22
1) When the source of sound as well as the listener moves in the same direction with the same speed. 2) When one of source | listener is at the centre of the circle and the other is moving on the circle with uniform speed.
Answered by
2
1). when source (S) and the listener (L) both are at rest.
2). when S and L move in such a way that distance between them remains constant.
3). when source S and L are moving in mutually perpendicular direction
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