QUESTIONS 2026/2027 COMPLETE & ACCURATE EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES (100% CORRECT VERIFIED
ANSWERS) CURRENTLY UPDATED VERSION 2026
EDITION |GUARANTEED PASS A+ |FULL REVISED EXAM
A sound wave's frequency is 10MHz. The wave is traveling in soft
tissue. What is the wavelength?
0.15 mm
1.54 mm
15.4 mm
0.77 mm
10 MHz
ANSWERS: 0.15 mm
If the frequency of an US wave is doubled, what happens to the
period?
doubles
halved
remains the same
4 times greater
ANSWERS: halved
,If the frequency of US is increased from 0.77 MHz to 1.54 MHz, what
happens to the propagation speed?
doubled
halved
remains the same
4 times greater than
ANSWERS: remains the same
The units of pulse repetition frequency are
per minute
msec
mm/us
MHx
ANSWERS: per minute
The time from the beginning of a pulse until its end is ___ ?
period
pulse duration
pulse length
PRF
ANSWERS: pulse duration
,What happens to the speed of sound in a medium when the bulk
modulus of the medium increases?
faster
slower
unchanged
ANSWERS: faster
_____ resolution is determined by the spatial pulse length
radial
image
axial
angular
ANSWERS: radial, axial
If a wave's amplitude is doubled, what happens to the power?
nothing
halved
doubled
quadrupled
ANSWERS: quadrupled
, Power of sound has units of
dB
dB/cm
watts
watts/cm^2
ANSWERS: watts
If the intensity of a sound beam remains unchanged while the beam
area is reduced in half, what has happened to the power?
quadrupled
doubled
halved
unchanged
ANSWERS: halved
Which of these intensities is the smallest?
SATP
SPTP
SATA
ANSWERS: SATA