Advertisements
Advertisements
Question
The properties of ultrasound that make it useful are
Options
High power and high speed
High power and good directivity
High frequency and high speed
High frequency and bending around the objects.
Advertisements
Solution
The properties of ultrasound that make it useful are High power and good directivity
APPEARS IN
RELATED QUESTIONS
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.
Name the sound of the frequency given below:
1000 Hz
State the approximate speed of ultrasound in air.
Explain how do bats locate the obstacles and prey in their way.
Name three animals which can hear ultrasonic vibrations.
What is Galton’s whistle? To what use is it put?
An electromagnetic wave has a time period of 4 × 10-8 s. Calculate its frequency in MHz.
Ultraviolet radiation has a wavelength of 300Å. If the velocity of the electromagnetic wave is 3 × 108 ms-1. Calculate:
- frequency
- time period.
What does SONAR stand for? Where do we make use of SONAR?
Ultrasound has frequency of vibration




