Physics for IGCSE & O level - Waves And Sounds (Section 5 - No. 29)
What is the role of the ultrasound transmitter/detector in the womb scanning process?
To send ultrasound pulses and receive reflections
To measure the baby's weight
To monitor the mother's heart rate
To inject fluids into the womb
解释
The transmitter/detector sends ultrasound pulses and receives the reflections.