Two sources of sounds and
produce sound waves of the same frequency 660 Hz. A listener is moving from source
towards
with a constant speed u m/s and he hears 10 beats/s. The velocity of sound is 330 m/s. Then, u equals:
5.5 m/s
15.0 m/s
2.5 m/s
10.0 m/s
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beat frequency =![f_{2}-f_{1}=\left [ \frac{C+u}{C}-\frac{C-u}{C} \right ]](https://learn.careers360.com/latex-image/?f_%7B2%7D-f_%7B1%7D%3D%5Cleft%20%5B%20%5Cfrac%7BC+u%7D%7BC%7D-%5Cfrac%7BC-u%7D%7BC%7D%20%5Cright%20%5D)
Option 1)
5.5 m/s
Option 2)
15.0 m/s
Option 3)
2.5 m/s
Option 4)
10.0 m/s