Singapore N(A)-Level Physics (5105): complete 2026 guide to the nine topic areas and Papers 1-2

Singapore GCE N(A)-Level Physics is the Physics half of the Science syllabus 5105 (Science: Physics, Chemistry). It is a two-year Normal Academic course that builds a clear, everyday picture of the physical world, from measuring quantities and describing motion through forces, energy and heat to waves, electricity, magnetism and the nuclear atom.

This page is the index. Below: the nine-topic content breakdown, the two-paper assessment structure, the school-based practical work, a study strategy, and a single link to every dot-point answer we have shipped for N(A)-Level Physics in 2026.

The nine topic areas of N(A)-Level Physics

Measurement and Kinematics

Physical quantities and SI units, prefixes and powers of ten, measuring length and time, and describing motion with speed, velocity, acceleration, motion graphs and free fall.

Forces and Dynamics

Newton's laws of motion, balanced and unbalanced forces, friction, scalars and vectors, equilibrium, and the turning effect of forces (moments).

Mass, Weight, Density and Pressure

The difference between mass and weight, gravitational field strength, density and how to measure it, and pressure in solids and in liquids.

Energy, Work and Power

Energy stores and transfers, the principle of conservation of energy, kinetic and gravitational potential energy, work done, and power.

Thermal Physics

Temperature and thermometers, heat capacity and specific heat capacity, changes of state and latent heat, and the transfer of thermal energy by conduction, convection and radiation.

Waves, Light and Sound

General wave properties (wavelength, frequency, speed and amplitude), reflection and refraction of light, and the properties of sound waves.

Electricity and Circuits

Static electricity and electric current, voltage, resistance and Ohm's law, and series and parallel circuits with electrical energy and power.

Magnetism and Electromagnetism

Magnets and magnetic fields, the magnetic effect of a current, the force on a current-carrying conductor, and electromagnetic induction.

Atomic and Nuclear Physics

The nuclear model of the atom, radioactivity and the three types of nuclear radiation, half-life, and the uses and dangers of radiation.

Assessment structure

The Physics component of N(A)-Level Science 5105 is assessed across two written papers, taken together in a single session.

• Paper 1: Multiple choice (20 questions, all compulsory, one mark each). Tests breadth across the whole Physics content with single-best-answer questions. You are advised to spend no more than 30 minutes on it.
• Paper 2: Structured questions (Section A compulsory, plus Section B). Section A carries a set of compulsory structured questions; Section B offers further structured questions. Answers are written in the spaces provided.

Both papers reward clear working, correct units, sensible significant figures, and short well-organised explanations. Marks are lost far more often for missing units or muddled method than for arithmetic slips.

Practical work

N(A)-Level Science (Physics) does not have a separate timed practical paper, but practical skill is built throughout the course and is tested on the written papers:

1. Using instruments. Reading a ruler, a measuring cylinder, a thermometer, an ammeter and a voltmeter to a sensible precision.
2. Planning a fair test. Identifying the variable you change, the variable you measure, and the variables you keep the same.
3. Recording and presenting data. Tabulating with units and plotting clear graphs with a line of best fit.
4. Drawing conclusions. Reading a gradient or a value off a graph and commenting sensibly on sources of error.

Build these habits from the first experiment, because the written papers reward them everywhere.

Syllabus, dot point by dot point

For topic-by-topic coverage, every N(A)-Level Physics learning outcome we have shipped has its own focused answer page with worked exam-style questions and cross-links to related points.

Browse the full set at /sg-n-level/physics/syllabus.

Study strategy

N(A)-Level Physics rewards steady method and clear understanding rather than clever tricks. The recipe:

1. Learn the key formulas with their units. Each topic has only a handful of formulas. Build a one-page list you can write from memory, and note the unit of every symbol.
2. Draw the picture first. A quick sketch, a free-body diagram, a circuit diagram or a ray diagram turns a wordy question into a simple one. Most structured questions reward a clear diagram.
3. Show every step with units. Write the formula, substitute the numbers, then give the answer with its unit. This earns method marks even when the final number is wrong.
4. Practise full timed papers. From the second year, sit several complete papers under time. Drill the multiple-choice paper for speed and the structured paper for clear, full answers.

For the official syllabus

SEAB publishes the full 5105 syllabus document and examination requirements at seab.gov.sg. Always confirm content and assessment weightings against the current syllabus year, as SEAB reviews syllabuses periodically.