Physics
The properties of ultrasound that make it useful, are:
- High power and high speed
- High power and good directivity
- High frequency and high speed
- High frequency and bending around the objects
Answer
High power and good directivity
Reason — Properties of ultrasound that make it useful to us are:
- The energy carried by ultrasound is very high.
- The ultrasound can travel along a well defined straight path. It does not bend appreciably at the edges of an obstacle because of it's small wavelength (i.e., it has high directivity).
Related Questions
Choose the correct statement :
- Ultrasonic waves travel faster than supersonic waves.
- Sonic waves travel faster than supersonic waves.
- Sonic waves travel faster than ultrasonic waves.
- Sonic and ultrasonic waves travel with the same speed.
The sound of frequency less than 20 Hz is called :
- supersonic
- infrasonic
- ultrasonic
- ultrasound
Sonar makes use of:
- Infrasonic sound
- Ultrasound
- Supersonic sound
- Light
Assertion (A) : Sound waves cannot travel through vacuum.
Reason (R) : Sound travels in the form of longitudinal waves.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false