SPI PRACTICE QUESTIONS with complete solution 2023
SPI PRACTICE QUESTIONS with complete solution 2023Sound waves are: longitudinal, mechanical The speed of sound in soft tissue is closest to: 1,500 m/s The frequency closest to the lower limit of ultrasound is: 15,000 Hz Which is not an acoustic variable? intensity The effects of soft tissue on ultrasound are called: acoustic propagation properties All of the following are true EXCEPT: two waves with identical frequencies must interfere constructively Put in decreasing order: deci, deca, micro, centi deca, deci, centi micro ______________ is the time to complete one cycle period Which of the following sound waves is ultrasonic and least useful? 30 KHz What is the frequency of a wave with a 1 msec period? 1 KHz ______________ is the distance covered by one cycle wavelength Which of the following is determined by the source and the medium? range resolution Propagation speed = ______________ x wavelength frequency As a result of ______________, the propagation speed increases decreasing compressibility and density
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