Physics 9702 · AS & A Level · Production and use of ultrasound

Production and use of ultrasound — practice question

(a)[4]

Explain the principles behind the detection of ultrasound waves for medical diagnosis.

(b)[3]

By reference to specific acoustic impedance, explain why there is very little transmission of ultrasound waves from air into skin.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Ultrasound pulses” …