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प्रश्न
The properties of ultrasound that make it useful are
पर्याय
High power and high speed
High power and good directivity
High frequency and high speed
High frequency and bending around the objects.
उत्तर
The properties of ultrasound that make it useful are High power and good directivity
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संबंधित प्रश्न
The sketches I to IV in following Figure show sound waves, all formed in the same time interval.
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 |
| I | II |
 |
 |
| III | IV |
Which diagram shows
- a note from a musical instrument
- a soft (or feeble) note,
- a bass (low frequency) note.
Complete the following sentences:
An average person can hear sound of frequencies in the range ______ to _________.
Can you hear the sound produced due to vibrations of a seconds pendulum? Give reasons.
What do you understand by the term ultrasonic vibrations?
What is Galton’s whistle? To what use is it put?
Does SONAR make use of infrasonic sound?
What are ultrasonic? State and explain two applications of ultrasounds.
What are infrasonic and ultrasonic sounds?
What are hearing aids?
1 hertz is equal to
