1. A source and an observer are at rest on the earth but a strong wind is blowing over them. Is there a Doppler effect?
When the source and observer are moving in the same direction, the apparent frequency is given by
n’=n (
(V+W)Vs
Where, Vo is the velocity of the observer
Vs is the velocity of the source
W is the velocity of the wind blowing in the same direction.
If the source and observer are at rest i.e.Vo=Vs=0
n’=n
There would be no Doppler shift in frequency because the wind is moving with the same velocity relative to both the observer and source. Notice that the sound medium moving against the direction...
