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प्रश्न
What are ultrasonic? State and explain two applications of ultrasounds.
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उत्तर
Ultrasonic sound is the sound having frequency more than 20KHz. The application of ultrasonic sound is as follows:
(i) It is used to detect the flaws in metal casting of automobile tyres.
(ii) Used in hospitals to detect defects in certain parts of the body.
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संबंधित प्रश्न
Complete the following sentence:
Ultrasound is of frequency ___________.
Complete the following sentence:
Elephants produce ____________sound.
Name the sound of the frequency given below:
40 kHz
State two applications of ultrasound.
The properties of ultrasound that make it useful are
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
What is Galton’s whistle? To what use is it put?
State four practical uses of ultrasonic vibrations.
Is the energy carried by the ultrasound very high or very low?
Ultrasound has frequency of vibration
