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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
Which has the higher frequency - ultrasonic sound or infrasonic sound?
Complete the following sentence:
Bats can produce and hear ___________ sound.
Complete the following sentence:
Elephants produce ____________sound.
Name the sound of the frequency given below:
100 Hz
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 do you understand by the term ultrasonic vibrations?
What does SONAR stand for?
Does SONAR make use of infrasonic sound?
The range of audible frequency for the human ear is
