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-PX-NR-0012 marksL1 FoundationCalculatorNuclear radius

Using

R_0=1.2

fm, calculate the radius of a uranium-238 nucleus in fm.

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SA-PX-NR-0021 markL1 FoundationCalculatorNuclear radius

State the ratio of the radius of a nucleus with

A=216

to one with

A=27

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SA-PX-NR-0041 markL1 FoundationCalculatorReactors

In a thermal fission reactor, the moderator

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SA-PX-NR-0051 markL1 FoundationCalculatorReactors

Control rods are made from materials such as boron because they

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SA-PX-NR-0081 markL1 FoundationCalculatorReactors

A reactor is critical when, on average,

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SA-PX-NR-X011 markL1 FoundationCalculatorNuclear radius

Using

R_0=1.2

fm, calculate the radius of an aluminium-27 nucleus in fm.

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SA-PX-NR-X021 markL1 FoundationCalculatorNuclear radius

State the ratio of the volumes of nuclei with

A=64

and

A=8

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SA-PX-NR-X041 markL1 FoundationCalculatorReactors

The coolant in a nuclear reactor

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SA-PX-NR-0032 marksL2 StandardCalculatorNuclear radius

5.0

MeV α particle is fired directly at a gold nucleus (

Z=79

). Using

\frac{e^2}{4\pi\varepsilon_0}=1.44

MeV fm, calculate the distance of closest approach in fm.

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SA-PX-NR-0061 markL2 StandardCalculatorNuclear radius

All nuclei have approximately the same density because

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SA-PX-NR-X032 marksL2 StandardCalculatorNuclear radius

4.0

MeV α particle is fired at a silver nucleus (

Z=47

). Using

\frac{e^2}{4\pi\varepsilon_0}=1.44

MeV fm, calculate the closest approach in fm.

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SA-PX-NR-0073 marksL3 ExamCalculatorNuclear radius

Using

R_0=1.2

fm and

u=1.66\times10^{-27}

kg, calculate the density of nuclear matter in units of

10^{17}

kg m⁻³.

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