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Physics (Cambridge)

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Easy: direct recall or one straightforward application. Medium: linked steps or interpreting a diagram or data. Hard: several linked ideas or substantial inference. Ratings guide practice; they do not predict your score. All includes any questions still awaiting a rating.

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Motion, forces and energy

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Physical quantities and measurement techniques
Motion
Mass and weight
Density
Forces
Momentum
Energy, work and power
Pressure

Thermal physics

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Kinetic particle model of matter
Thermal properties and temperatuare
Transfer of thermal energy

Waves

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General properties of waves
Light
Electromagnetic spectrum
Sound

Electricity and magnetism

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Simple magnetism and magnetic fields
Electrical quantities
Electric circuits
Practical electricity
Electromagnetic effects
Uses of an oscilloscope

Nuclear physics

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The nuclear model of the atom
Radioactivity

Space physics

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Earth and the Solar System
Stars and the Universe

Multiple Choice Structured Questions

O/N · 5054/11 · 2025 · Q371 marks · sit it in its paper

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CIE-5054-2025-ON-p11 · Question 37

Explain the problem

You may use a calculator. Take the weight of 1.0 kg to be 9.8 N (acceleration of free fall = 9.8 m/s²).

Question 37, including diagrams and options A–D. Text version below.

37 A smoke alarm contains a radioactive source, S. The useful emissions from S are blocked by a

few centimetres of air.

What is the useful radioactive radiation emitted by S?

A alpha and gamma

B alpha only

C beta and gamma

D beta only

[1 mark]

Reveal correct answer after selection

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