A Level Physics 9702, topic 24.1
Production and use of ultrasound: past paper questions
7 Cambridge A Level Physics 9702 questions on Production and use of ultrasound (24.1) from 7 papers, 2023 to 2025. Open the paper or try a question free.
Practising builds a set from this topic, free with an account. One question opens straight away, with no account.
- Questions
- 7
- Papers
- 7
- Years
- 2023 to 2025
- Total marks
- 55
- Average per question
- 7.9 marks
- Largest question
- 8 marks
By type: Structured 7
What the syllabus asks
- understand that a piezo-electric crystal changes shape when a p.d. is applied across it and that the crystal generates an e.m.f. when its shape changes
- understand how ultrasound waves are generated and detected by a piezoelectric transducer
- understand how the reflection of pulses of ultrasound at boundaries between tissues can be used to obtain diagnostic information about internal structures
- define the specific acoustic impedance of a medium as Z = ρc, where c is the speed of sound in the medium
- use IR / I0 = (Z1 – Z2) 2 /(Z1 + Z2) 2 for the intensity reflection coefficient of a boundary between two media
- recall and use I = I0e–μx for the attenuation of ultrasound in matter
How hard the questions are
- Recall0
- Apply3
- Analyse4
- Not banded0
Derived from the command word Cambridge prints in each question, banded by a fixed table beside the syllabus's own definitions. A question printing no command word is unbanded: unknown, not middling.
Command words
- calculateApply4 questions
work out from given facts, figures or information
- completeApply4 questions
- explainAnalyse4 questions
set out purposes or reasons/make the relationships between things evident/provide why and/or how and support with relevant evidence
- defineRecall3 questions
give precise meaning
- show thatApply2 questions
- useApply2 questions
- describeApply1 question
state the points of a topic / give characteristics and main features
- determineApply1 question
establish an answer using the information available
Where the questions come from
By year
- 20252
- 20241
- 20234
By session
- May/June3
- Oct/Nov4
By paper
- Paper 47
Questions on this topic
Showing 5 of 7, spread across the years. Open one to write your answer and have it marked.
- Try this questionQuestion 10Oct/Nov 2025, paper 41Structured8 marks
Define specific acoustic impedance.
- Try this questionQuestion 10May/June 2024, paper 42Structured7 marks
Describe how reflected ultrasound pulses may be used to obtain diagnostic information about internal structures.
- Try this questionQuestion 10Oct/Nov 2023, paper 41Structured8 marks
Ultrasound and X-rays are both types of wave that are used in medical diagnosis to form images of internal body structures.
- Try this questionQuestion 8May/June 2023, paper 41Structured8 marks
Table 8.1 shows some data relating to the properties of air, gel and body tissue. The data are given to three significant figures. Show that the specific acoustic impedance of gel is .
- Try this questionQuestion 8May/June 2023, paper 43Structured8 marks
Table 8.1 shows some data relating to the properties of air, gel and body tissue. The data are given to three significant figures.