A sound source and listener both are at rest on the earth, but a strong wind is blowing. Is there a Doppler effect?

What is Doppler's effect? Derive an expression for the apparent frequencies when the medium at source is in motion, observe at rest.

A listener and a sound source are going with the same velocity in the same direction. What will be ratio of frequencies of source and frequency heard by listener?

Find out the velocity at which a source of frequency 10,000 Hz should approach an observer at rest in order to produce a Doppler shift of 200Hz. (Velocity of sound=340m/s).

A more conservative and scientifically sound estimate about the total number of species present on earth, was made by (a) Robert May (b) Paul Ehrlich (c) David Tilman (d) Both A and B

Discuss the effect of wind on velocity of sound wave in air?

Doppler's effect is due to ____ motion between the source and observer.