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प्रश्न
State two applications of ultrasound.
लघु उत्तरीय
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उत्तर
- Ultrasound is used for drilling holes or making cuts of desired shape in materials like glass.
- Ultrasound is used in surgery to remove cataracts and in the kidneys to break the small stones into fine grains.
- Ultrasonic sound is used to detect flaws in metal castings used in automobile tyres.
- It is used in hospitals to detect defects in certain parts of the body.
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
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?
Complete the following sentence:
Ultrasound is of frequency ___________.
Name the sound of the frequency given below:
10 Hz
Name the sound of the frequency given below:
40 kHz
Explain how do bats locate the obstacles and prey in their way.
What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.
Name three animals which can hear ultrasonic vibrations.
What is Galton’s whistle? To what use is it put?
What is echocardiography?
