Doppler's Effect

A source emitting a sound frequency \(v\) is placed at a large distance from an observer. The source starts moving towards the observer with a uniform acceleration \(a\). Find the frequency heard by the observer corresponding to the wave emitted just after the source starts. The speed of sound in air is \(u\).

Details And Assumptions:

\( v=500 \text{ Hz} , a= 10000 \text{ m/s}^2 , u=340 \text{ m/s} \).

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