Exam-style question
Try this first
What is the principle behind the generation of ultrasound pulses?.
- A.Piezoelectric effect
- B.Electromagnetic induction
- C.Thermal expansion
- D.Mechanical vibration
Model answer
What a good answer should say
- Piezoelectric effect
Explanation
Why this works
Ultrasound pulses are generated using the piezoelectric effect, where certain materials produce an electric charge when mechanically stressed, allowing them to emit sound waves.
Common mistake
No common mistake is linked to this question yet.