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EASA Part-66 Module 2 Cats A · B1 · B2 · B2L · B3

Physics EASA Part-66 — Module 2 Practice Questions

Module 2 covers the physics every aircraft maintenance engineer needs on the line: matter, mechanics, fluid behaviour, thermodynamics, optics and waves. Below: what's covered, exam format for each licence category, and seven free sample questions in the style you'll meet on exam day.

Try 7 Module 2 questions — no account Try a 10-question warm-up
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Every question comes with a worked, EASA-grounded explanation — understand why, don't just memorise.
996
Questions in bank
5
Syllabus sections
65 min
Exam time (B1/B2)
75 %
EASA pass mark

Syllabus at a glance

Full Module 2 syllabus
Section 2.1
Matter
  • Nature of matter: elements, atoms & molecules
  • Chemical compounds & bonding
  • States of matter and changes of state
Section 2.2
Mechanics
  • Statics: forces, moments, stress & strain
  • Kinetics: linear, rotational & periodic motion (B1/B3)
  • Dynamics: mass, energy, momentum & friction
  • Fluid dynamics: density, viscosity & Bernoulli
Section 2.3
Thermodynamics
  • Temperature scales: Celsius, Fahrenheit & Kelvin
  • Heat transfer: conduction, convection & radiation
  • Gas laws, latent heat & engine cycles (B1/B3)
Section 2.4
Optics (Light)
  • Nature & speed of light
  • Reflection at plane & spherical mirrors
  • Refraction, lenses & fibre optics (B1+)
Section 2.5
Wave Motion and Sound
  • Sinusoidal wave motion & wave phenomena
  • Interference & standing waves
  • Sound: speed, intensity, pitch & Doppler effect

Three classic exam-day traps

Mass number vs atomic number

Atomic number counts protons only; mass number counts protons plus neutrons. Candidates routinely swap them or add electrons into the mix, which is never correct.

Heat of fusion vs heat of vaporisation

Fusion is the latent heat for solid ↔ liquid; vaporisation is liquid ↔ gas. Both happen at constant temperature, so candidates pick the wrong one when the temperature stays put.

Frequency vs period

Period (seconds) and frequency (hertz) are reciprocals: T = 1/f. Under time pressure candidates plug f straight in or forget to invert, and the answer goes off by a factor of f².

What Module 2 covers — in plain English

Module 2 of the EASA Part-66 syllabus tests the physical principles that underpin nearly every other module in the licence: how forces act on an airframe (Module 11), how fluids behave in hydraulics and pitot-static systems (Modules 7 and 11), how heat moves through engines and structures (Modules 14 to 17), and how light and sound work in cockpit displays and NDT. A candidate who is shaky on Module 2 typically struggles with the engine and aerodynamics papers too, which is why the syllabus places it so early.

The five sub-sections — Matter, Mechanics, Thermodynamics, Optics and Wave Motion & Sound — are weighted differently per licence category. Category A and B3 candidates sit a 32-question paper covering the topics at knowledge level 1 (basic familiarisation), with that same basic level applied to Matter for everyone. B1, B2 and B2L candidates sit a longer 52-question paper at knowledge level 2 across mechanics, thermodynamics, optics and waves — they need to apply the principles, not just recognise them.

Expect a mix of conceptual definitions (what is the atomic number? what is heat of fusion?) and short numerical problems on levers, pressure, density and wave period. The paper is sat without a calculator, so arithmetic from Module 1 still matters here. The full per-section knowledge-level breakdown is on our Module 2 syllabus page.

These samples are drawn from our live Module 2 question bank of 996 questions. The full timed practice quiz draws 52 questions per attempt (or 32 for Cat A), scored against the official EASA 75 % pass mark, with weak-area tracking across attempts.

7 free sample questions

Pick an answer and you'll see immediately whether it was right, with the explanation.

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Q1 Matter · Atomic Structure

What is the mass number of an element?

  1. A Number of electrons and protons.
  2. B Number of neutrons and protons.
  3. C Number of protons and electrons.
Reveal answer + explanation Hide answer
Correct answer: B — Number of neutrons and protons.
Mass number A counts the nucleons — protons plus neutrons — because electrons contribute almost nothing to mass. The atomic number Z, easily confused, counts protons only. Swapping the two is one of the most common Module 2 errors.
Q2 Mechanics · Statics

A lever of length 105 cm is used with a fulcrum placed 15 cm from the end bearing the load. Its mechanical advantage is

  1. A 9.
  2. B 7.
  3. C 6.
Reveal answer + explanation Hide answer
Correct answer: C — 6.
Mechanical advantage of a lever = effort arm ÷ load arm. The load arm is 15 cm; the effort arm is the remaining 105 − 15 = 90 cm. 90 ÷ 15 = 6. A frequent trap is using the full 105 cm as the effort arm, which gives 7.
Q3 Mechanics · Statics

Equilibrium of translation occurs when

  1. A downward forces equal upward (reactive) forces.
  2. B clockwise moments equal counterclockwise moments.
  3. C applied forces equal the centripetal reaction.
Reveal answer + explanation Hide answer
Correct answer: A — downward forces equal upward (reactive) forces.
Translational equilibrium means the resultant force is zero, so opposing forces balance. The moments-balance condition describes rotational equilibrium — a different test that often appears as a distractor on Module 2 statics questions.
Q4 Thermodynamics · Latent Heat

What form of heat is used to turn a solid into a liquid?

  1. A thermal energy
  2. B radiant energy
  3. C heat of fusion
Reveal answer + explanation Hide answer
Correct answer: C — heat of fusion
The latent heat absorbed during melting at constant temperature is the heat of fusion. Thermal and radiant energy are general categories that raise temperature; latent heat changes state without changing temperature, which is the testable distinction.
Q5 Thermodynamics · Latent Heat

The heat required to change a liquid to a gas at constant temperature is the heat of

  1. A condensation.
  2. B sublimation.
  3. C vaporisation.
Reveal answer + explanation Hide answer
Correct answer: C — vaporisation.
Liquid → gas is vaporisation; the reverse (gas → liquid) is condensation. Sublimation is solid → gas directly. All three are latent heats — energy that changes phase without changing temperature.
Q6 Optics · Lenses & Mirrors

Divergent light rays give rise to

  1. A a focused image.
  2. B a virtual image.
  3. C a blurred image.
Reveal answer + explanation Hide answer
Correct answer: B — a virtual image.
A virtual image is formed where divergent rays only appear to come from a common point behind the mirror or lens — they cannot be projected onto a screen. Convergent rays meeting in front of the surface form a real (focused) image.
Q7 Wave Motion · Period & Frequency

What is the period of a frequency of 4 Hz?

  1. A 0.50 seconds.
  2. B 0.25 seconds.
  3. C 2.00 seconds.
Reveal answer + explanation Hide answer
Correct answer: B — 0.25 seconds.
Period and frequency are reciprocals: T = 1 / f. T = 1 / 4 = 0.25 seconds. Period is the time for one complete cycle; frequency is how many cycles occur per second. Forgetting to invert is the classic trap.
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Sign up, pick Module 2 from the dashboard, and take a timed exam drawn from our 996-question bank — the number of questions follows your licence category (32 for Cat A, 52 for B1/B2/B2L/B3). Your score is tracked across attempts and we surface your weakest sub-topics so revision time pays off.

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Module 2 — frequently asked questions

How many questions are in the EASA Part-66 Module 2 exam?
The Category A (and B3) Module 2 exam has 32 multiple-choice questions, while the Category B1, B2 and B2L exam has 52 multiple-choice questions. The B1/B2 paper is longer because those categories are tested at a higher knowledge level across mechanics, thermodynamics, optics and wave motion. So the counts are not the same — B1/B2 candidates answer 20 more questions than Category A/B3.
What is the pass mark for EASA Part-66 Module 2?
The pass mark for Module 2 is 75%, the same threshold that applies to every EASA Part-66 module. On a 32-question Category A/B3 paper that means at least 24 correct; on a 52-question B1/B2/B2L paper it means at least 39 correct. Aim comfortably above the line, because Physics questions are easy to slip on under time pressure.
How long is the Module 2 exam?
Category A (and B3) candidates get 40 minutes for the 32-question Module 2 paper, and Category B1, B2 and B2L candidates get 65 minutes for the 52-question paper. That works out to roughly 75 seconds per question in both cases. The paper is sat without a calculator, so practise the lever, pressure, density and wave-period arithmetic until it is quick.
Which EASA licence categories require Module 2?
Module 2 (Physics) is required across Cats A, B1, B2, B2L and B3. It is a foundation module sat by every licence category because the physical principles it covers underpin nearly every other subject. The depth differs by category — Category A and B3 sit the shorter 32-question paper, while B1, B2 and B2L sit the longer 52-question paper at a higher knowledge level.
What does Module 2 cover, and what do students find hardest?
Module 2 spans five areas: Matter (atoms, molecules, states of matter), Mechanics (statics, kinetics, dynamics and fluid dynamics), Thermodynamics (temperature scales, heat transfer, gas laws and latent heat), Optics (reflection, refraction and lenses) and Wave Motion and Sound. The most common trip-ups are confusing atomic number (protons only) with mass number (protons plus neutrons), mixing up heat of fusion (solid to liquid) with heat of vaporisation (liquid to gas), and forgetting that period and frequency are reciprocals (T = 1/f). Each of these is a definition students think they know until a distractor is worded to catch the swap. Working through the sample questions above builds the habit of reading each stem carefully before answering.
How should I revise for EASA Part-66 Module 2?
Split your revision by the five syllabus areas and drill the definitions that are easy to swap — atomic number versus mass number, heat of fusion versus vaporisation, and equilibrium of translation versus rotation. Because the exam is sat without a calculator, practise the short numerical problems (lever mechanical advantage, pressure, density, and period from frequency) until the arithmetic is automatic. Then work through timed sets of practice questions so you can hold roughly 75 seconds per question on exam day.
Can I practise in a language other than English?

Yes. Every quiz question, all of its answer options and the written explanation can be read in 13 languages besides English — Chinese (Traditional), French, German, Greek, Hindi, Italian, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish and Turkish. It is included for every signed-in member at no extra cost, and you can switch language in the middle of a quiz without losing your answers or your timer.

The English original stays one click away on every question, which is the point: the EASA Part-66 examination is sat in English, so you can read a question in your own language, answer it, then switch it back to English to check yourself against the wording you will actually meet.

Two caveats worth knowing. It is machine translation — checked so that no two answer options drift into meaning the same thing and that numerals and units survive intact, but it is not a human technical translation. And technical designations such as A320, LEAP-1A, Part-145, CS-25 and ATA chapter numbers are deliberately left in English, because those are the strings on the aircraft, in the manual and on the exam paper. Translation covers the quizzes; the study notes and reference pages are in English.

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Other EASA Part-66 modules

All modules
EASA Part-66
1. Mathematics
EASA Part-66
3. Electrical fundamentals
EASA Part-66
4. Electronic fundamentals
EASA Part-66
5. Digital techniques / Electronic instrument systems
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6. Materials & hardware
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7. Maintenance practices
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8. Basic aerodynamics
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9. Human factors
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10. Aviation legislation
EASA Part-66
11. Aeroplane aerodynamics, structures and systems
EASA Part-66
12. Helicopter aerodynamics, structures and systems
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13. Aircraft aerodynamics, structures and systems
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14. Propulsion
EASA Part-66
15. Gas turbine engine
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16. Piston engine
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17. Propeller
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18. Electric power plant

Module 2 study resources

Module 2 detailed syllabus
Per Commission Regulation (EU) 2023/989
Module 2 study notes
Topic-by-topic explanations
Free Module 2 study notes: 2.1 Matter
Read the complete section free — no account needed
Q&A Forum
Ask about tricky Module 2 questions
EASA licence categories
A · B1 · B2 · B2L · B3 overview

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