Question
State any four applications of beats.
✓
Answer
- The phenomenon of beats is used for matching the frequencies of different musical instruments by artists.
- The speed of an airplane can be determined by using Doppler RADAR. The phenomenon of beats, arising due to the difference in frequencies produced by the source and received at the source after reflection from the airplane, allows us to calculate the velocity of the airplane.
- Doppler ultrasonography and echocardiogram works on the principle of the phenomenon of beats.
- The unknown frequency of a sound note can be determined by using the phenomenon of beats.
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