Physics Question on Waves

Question

A sound source $S$ is moving along a straight track with speed $v ,$ and is emitting sound of frequency $v_{0}$ (see figure). An observer is standing at a finite distance, at the point $O ,$ from the track. The time variation of frequency heard by the observer is best represented by :
$\left( t _{0}\right.$ represents the instant when the distance between the source and observer is minimum)

Answer 1

Solution

solution