Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  3. Physics AQA
  5. Question bank

Non-ionising imaging (A-level only)

MediumHard
12345678
Question 6

An ultrasound transducer is used to image internal structures in a patient's body.

a.

Explain why a coupling gel is used between the transducer and the patient's skin.

[2]
b.

A beam of ultrasound is transmitted from blood into bone. Calculate the percentage of the incident intensity that is transmitted.

acoustic impedance of bone = 6.1 × 106 kg m-2 s-1 density of blood = 1060 kg m-3 speed of ultrasound in blood = 1570 m s-1

[3]

Non-ionising imaging (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Non-ionising imaging (A-level only)