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प्रश्न
What is Galton’s whistle? To what use is it put?
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उत्तर
A special whistle that can produce ultra sound, not heard by humans, is called Galton’s whistle.
It is used to train dogs because they can hear ultrasounds up to a frequency of 40000 hertz.
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संबंधित प्रश्न
What is ultrasound?
State two applications of ultrasound.
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
State four practical uses of ultrasonic vibrations.
What are ultrasonic?
What are ultrasonic? State and explain two applications of ultrasounds.
Is the energy carried by the ultrasound very high or very low?
What does SONAR stand for? Where do we make use of SONAR?
Ultrasound has frequency of vibration
The range of audible frequency for the human ear is
