ANSWERS ALL CORRECT
The conversion of an incident pressure wave to an electrical wave signal is the effect -
Answer- Piezoelectric
The wavelength is directly proportional to the frequency - Answer- false
Which of the following units are appropriate to describe the period of an acoustic wave -
Answer- microseconds
The wavelength of a 5 MHz wave is greater than the wavelength of a 5 kHz wave -
Answer- false
The length of one complete cycle is called: - Answer- Period
What is the period of 10 kHz - Answer- 0.001 s
Propagation speed is determined by - Answer- properties of the medium
If a 2 MHz transducer is used in human soft tissue the wavelength is approximately -
Answer- 0.75 mm
Ultrasound waves in bone are not waves - Answer- longitudinal
What is the propagation speed of a 5 MHz sound wave in soft tissue - Answer- 1.54
mm/us
Longitudinal waves are - Answer- parallel to the axis of the wave propagation
The following are acoustic variables except - Answer- wavelength
What is the velocity of ultrasound in a medium if the wavelength is 4 mm and the
frequency is 5 MHz - Answer- 20000 m/s???
The average velocity of sound in air is - Answer- 330 m/s
What is the wavelength of 3MHz ultrasound in soft tissue - Answer- 0.513 mm