Exam-style question
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How are ultrasound pulses detected?.
- A.By measuring changes in temperature
- B.Using piezoelectric sensors
- C.Through electromagnetic waves
- D.By sound reflection
Model answer
What a good answer should say
- Using piezoelectric sensors
Explanation
Why this works
Ultrasound pulses are detected using piezoelectric sensors, which convert the mechanical energy of the returning sound waves back into electrical signals for imaging.
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