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ULTRASOUND PHYSICS, NEWEST UPDATED EXAM 2026 – 2027 SOLVED
QUESTIONS & ANSWERS VERIFIED 100% GRADED A+ (LATEST VERSION)
Q1. Which of the following best defines ultrasound?
A. Sound with a frequency below 20 Hz
B. Sound with a frequency above 20,000 Hz
C. Sound with a frequency between 20 Hz and 20,000 Hz
D. Electromagnetic radiation
Correct Answer: B
Rationale: Ultrasound is defined as sound with a frequency greater than 20,000 Hz (20
kHz).
Q2. Sound is a mechanical wave that requires which of the following to propagate?
A. A vacuum
B. A medium
C. Electromagnetic fields
D. Light
Correct Answer: B
Rationale: Sound is a mechanical, longitudinal wave that requires a medium (tissue) to
travel through.
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Q3. The frequency of a sound wave is determined by which of the following?
A. The source
B. The medium
C. The distance traveled
D. The amplitude
Correct Answer: A
Rationale: Frequency is determined by the sound source, not by the medium.
Q4. The propagation speed of sound in a medium is determined by which of the
following?
A. The source frequency
B. The stiffness and density of the medium
C. The amplitude of the wave
D. The power output
Correct Answer: B
Rationale: Propagation speed is determined by the stiffness and density of the medium.
Q5. Which of the following media has the highest propagation speed of sound?
A. Air
B. Fat
C. Soft tissue
D. Bone
Correct Answer: D
Rationale: Bone has the highest stiffness and therefore the highest propagation speed
(approximately 4080 m/s).
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Q6. The average propagation speed of sound in soft tissue is approximately:
A. 1540 m/s
B. 330 m/s
C. 4080 m/s
D. 1450 m/s
Correct Answer: A
Rationale: The average propagation speed in soft tissue is 1540 m/s.
Q7. Which of the following best describes the relationship between frequency and
period?
A. Directly proportional
B. Inversely proportional
C. Unrelated
D. Exponentially related
Correct Answer: B
Rationale: Period is the reciprocal of frequency (T = 1/f).
Q8. The wavelength of a sound wave is determined by which of the following?
A. Frequency and propagation speed
B. Amplitude and power
C. Intensity and duration
D. Attenuation and reflection
Correct Answer: A
Rationale: Wavelength = propagation speed / frequency.
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Q9. As frequency increases, wavelength:
A. Increases
B. Decreases
C. Remains the same
D. Doubles
Correct Answer: B
Rationale: Wavelength and frequency are inversely related.
Q10. Which of the following best describes amplitude?
A. The number of cycles per second
B. The difference between the peak and trough of a wave
C. The distance between two consecutive peaks
D. The speed of sound
Correct Answer: B
Rationale: Amplitude is the maximum displacement from the baseline (peak to trough).
Q11. Power is proportional to which of the following?
A. Frequency squared
B. Amplitude squared
C. Wavelength
D. Period
Correct Answer: B
Rationale: Power is proportional to the square of the amplitude.
Q12. Intensity is defined as:
A. Power per unit area
ULTRASOUND PHYSICS, NEWEST UPDATED EXAM 2026 – 2027 SOLVED
QUESTIONS & ANSWERS VERIFIED 100% GRADED A+ (LATEST VERSION)
Q1. Which of the following best defines ultrasound?
A. Sound with a frequency below 20 Hz
B. Sound with a frequency above 20,000 Hz
C. Sound with a frequency between 20 Hz and 20,000 Hz
D. Electromagnetic radiation
Correct Answer: B
Rationale: Ultrasound is defined as sound with a frequency greater than 20,000 Hz (20
kHz).
Q2. Sound is a mechanical wave that requires which of the following to propagate?
A. A vacuum
B. A medium
C. Electromagnetic fields
D. Light
Correct Answer: B
Rationale: Sound is a mechanical, longitudinal wave that requires a medium (tissue) to
travel through.
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Q3. The frequency of a sound wave is determined by which of the following?
A. The source
B. The medium
C. The distance traveled
D. The amplitude
Correct Answer: A
Rationale: Frequency is determined by the sound source, not by the medium.
Q4. The propagation speed of sound in a medium is determined by which of the
following?
A. The source frequency
B. The stiffness and density of the medium
C. The amplitude of the wave
D. The power output
Correct Answer: B
Rationale: Propagation speed is determined by the stiffness and density of the medium.
Q5. Which of the following media has the highest propagation speed of sound?
A. Air
B. Fat
C. Soft tissue
D. Bone
Correct Answer: D
Rationale: Bone has the highest stiffness and therefore the highest propagation speed
(approximately 4080 m/s).
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Q6. The average propagation speed of sound in soft tissue is approximately:
A. 1540 m/s
B. 330 m/s
C. 4080 m/s
D. 1450 m/s
Correct Answer: A
Rationale: The average propagation speed in soft tissue is 1540 m/s.
Q7. Which of the following best describes the relationship between frequency and
period?
A. Directly proportional
B. Inversely proportional
C. Unrelated
D. Exponentially related
Correct Answer: B
Rationale: Period is the reciprocal of frequency (T = 1/f).
Q8. The wavelength of a sound wave is determined by which of the following?
A. Frequency and propagation speed
B. Amplitude and power
C. Intensity and duration
D. Attenuation and reflection
Correct Answer: A
Rationale: Wavelength = propagation speed / frequency.
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Q9. As frequency increases, wavelength:
A. Increases
B. Decreases
C. Remains the same
D. Doubles
Correct Answer: B
Rationale: Wavelength and frequency are inversely related.
Q10. Which of the following best describes amplitude?
A. The number of cycles per second
B. The difference between the peak and trough of a wave
C. The distance between two consecutive peaks
D. The speed of sound
Correct Answer: B
Rationale: Amplitude is the maximum displacement from the baseline (peak to trough).
Q11. Power is proportional to which of the following?
A. Frequency squared
B. Amplitude squared
C. Wavelength
D. Period
Correct Answer: B
Rationale: Power is proportional to the square of the amplitude.
Q12. Intensity is defined as:
A. Power per unit area
