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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
The sketches I to IV in following Figure show sound waves, all formed in the same time interval.
 |
 |
| I | II |
 |
 |
| III | IV |
Which diagram shows
- a note from a musical instrument
- a soft (or feeble) note,
- a bass (low frequency) note.
Which has the higher frequency - ultrasonic sound or infrasonic sound?
Name the sound of the frequency given below:
10 Hz
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 are ultrasonic?
What are infrasonic and ultrasonic sounds?
Is the energy carried by the ultrasound very high or very low?
Bats produce ______ sound during screaming.
