The difference between the apparent frequency of a sound as perceived by an observer during its approach and recession is 2% of the natural frequency of the source. If the velocity of sound in air is 300m/s , the velocity of the source is ?
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Frequency during approach-Frequency during recession=1002×f0
⟹f0(cc+v)−f0(cc−v)=1002f0
⟹3002v=1002
⟹v=3m/s
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