Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

TopicSkillDifficulty

12 questions

SA-9702-MP2-0031 markL1 FoundationCalculatorAttenuation and CT

Calculate the half-value thickness of a material with

\mu=50

m⁻¹, in cm.

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SA-9702-MP2-0041 markL1 FoundationCalculatorX-ray production

X-rays are produced in an X-ray tube when

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SA-9702-MP2-0051 markL1 FoundationCalculatorX-ray production

The accelerating voltage of an X-ray tube is doubled. The minimum X-ray wavelength

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SA-9702-MP2-0061 markL1 FoundationCalculatorAttenuation and CT

Contrast in an X-ray image between bone and soft tissue is due to

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SA-9702-MP2-0071 markL1 FoundationCalculatorAttenuation and CT

In CT scanning, a 3D image is produced by

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SA-9702-MP2-0091 markL1 FoundationCalculatorAttenuation and CT

An X-ray beam passes through

3

half-value thicknesses of a material. State the fraction of intensity transmitted, as a decimal.

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SA-9702-MP2-0121 markL1 FoundationCalculatorX-ray production

The target in an X-ray tube is usually made of tungsten because tungsten

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SA-9702-MP2-0012 marksL2 StandardCalculatorX-ray production

Calculate the minimum wavelength of X-rays from a tube operating at

30

kV, in units of

10^{-11}

m. (

h=6.63\times10^{-34}

J s;

c=3.00\times10^8

m s⁻¹;

e=1.60\times10^{-19}

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SA-9702-MP2-0022 marksL2 StandardCalculatorAttenuation and CT

Bone has an attenuation coefficient of

300

m⁻¹. Calculate the percentage of X-ray intensity transmitted through

1.0

cm of bone.

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SA-9702-MP2-0081 markL2 StandardCalculatorX-ray production

A contrast medium such as barium is used to image the digestive system because it

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SA-9702-MP2-0101 markL2 StandardCalculatorX-ray production

Calculate the maximum X-ray photon energy from a tube at

80

kV, in units of

10^{-14}

J. (

e=1.60\times10^{-19}

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SA-9702-MP2-0113 marksL3 ExamCalculatorAttenuation and CT

An X-ray beam passes through

4.0

cm of soft tissue (

\mu=20

m⁻¹) and then

1.0

cm of bone (

\mu=300

m⁻¹). Calculate the percentage of the original intensity that emerges.

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