Doppler's Effect

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

Details And Assumptions:

v=500 Hz,a=10000 m/s2,u=340 m/s v=500 \text{ Hz} , a= 10000 \text{ m/s}^2 , u=340 \text{ m/s} .

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