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Exam Review

Key Facts: UCE Physics Exam

535

Official UNEB UCE Subject Code for Physics

Uganda National Examinations Board (UNEB)

2 hr 30 min

Duration of Physics theory (535/1) in UNEB's NLSC samples

UNEB NLSC Sample Papers

2 hr

Duration of the registered Physics practical (535/2 or 535/3) in UNEB's NLSC samples

UNEB NLSC Sample Papers

20% / 80%

Continuous Assessment vs National Summative Exam Weighting

National Curriculum Development Centre (NCDC)

UGX 164,000

Standard UCE 2026 Normal Registration Fee (Private Candidates)

UNEB Official Circular

UNEB UCE Physics (Subject 535) is taken at the end of Senior Four. The subject grade combines 20% continuous assessment with 80% national examination; project achievement is reported separately. Candidates take theory 535/1 and their registered laboratory practical, 535/2 or 535/3. OpenExamPrep provides 90 independent English-language MCQ study questions across six practice topic groups.

Sample UCE Physics Practice Questions

Try these sample questions to review concepts for the UCE Physics exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 90+ question experience with AI tutoring.

1Which of the following groups contains only fundamental (base) SI units of physical quantities?
A.Kilogram, metre, second, ampere
B.Newton, joule, second, metre
C.Kilogram, cubic metre, second, volt
D.Ampere, watt, kelvin, second
Explanation: Under the International System of Units (SI), the fundamental base quantities and their units include mass (kilogram, kg), length (metre, m), time (second, s), electric current (ampere, A), thermodynamic temperature (kelvin, K), amount of substance (mole, mol), and luminous intensity (candela, cd).
2A stone of mass 156 g is lowered into a measuring cylinder containing water. The water level rises from 45 cm³ to 95 cm³. What is the density of the stone?
A.1.64 g cm⁻³
B.3.12 g cm⁻³
C.3.47 g cm⁻³
D.7.80 g cm⁻³
Explanation: The volume of the stone equals the volume of water displaced: 95 cm³ - 45 cm³ = 50 cm³. Density = mass / volume = 156 g / 50 cm³ = 3.12 g cm⁻³ (or 3120 kg m⁻³).
3A solid metal block weighs 4.8 N in air and 3.6 N when completely immersed in water. What is the relative density of the metal?
A.0.25
B.1.33
C.3.00
D.4.00
Explanation: According to Archimedes' principle, upthrust = weight in air - apparent weight in water = 4.8 N - 3.6 N = 1.2 N. Relative density = weight of object in air / upthrust in water = 4.8 N / 1.2 N = 4.0.
4A helical spring has an unstretched length of 12.0 cm. When a load of 1.5 N is hung from it, its length increases to 15.0 cm within its elastic limit. What is the spring constant of the spring?
A.10 N m⁻¹
B.50 N m⁻¹
C.100 N m⁻¹
D.150 N m⁻¹
Explanation: Hooke's law states that F = k * e, where extension e = 15.0 cm - 12.0 cm = 3.0 cm = 0.03 m. Therefore, spring constant k = F / e = 1.5 N / 0.03 m = 50 N m⁻¹.
5Why does adding liquid soap or detergent to water allow it to clean oily fabric much more effectively?
A.It increases the density of water so it sinks deeper into fabric pores.
B.It decreases the surface tension of water, allowing it to wet and penetrate fibers.
C.It raises the boiling point of water, making it dissolve grease chemically.
D.It creates an electrostatic charge that repels dirt particles mechanically.
Explanation: Detergents act as surfactants that reduce the cohesive intermolecular forces among water molecules, lowering surface tension. This enables water to spread easily, wet cloth fibers thoroughly, and emulsify oil and grease.
6A solid rectangular concrete block of mass 12 kg has a base area of 0.04 m² resting on a horizontal floor. Taking acceleration due to gravity g = 10 m s⁻², calculate the pressure exerted by the block on the floor.
A.300 Pa
B.480 Pa
C.3000 Pa
D.12000 Pa
Explanation: Weight of the block F = m * g = 12 kg * 10 m s⁻² = 120 N. Pressure P = Force / Area = 120 N / 0.04 m² = 3000 N m⁻² (or 3000 Pa).
7A diver swims to a depth of 15 m in a freshwater lake. Given that the density of water is 1000 kg m⁻³ and g = 10 m s⁻², calculate the liquid pressure exerted on the diver at this depth.
A.1.50 x 10⁴ Pa
B.1.50 x 10⁵ Pa
C.2.50 x 10⁵ Pa
D.1.50 x 10⁶ Pa
Explanation: Liquid pressure is given by P = h * ρ * g. Here, P = 15 m * 1000 kg m⁻³ * 10 m s⁻² = 150,000 Pa = 1.50 x 10⁵ Pa.
8In a hydraulic press, an effort piston has a cross-sectional area of 0.005 m² and the load piston has a cross-sectional area of 0.25 m². If an effort of 200 N is applied to the small piston, what maximum load can be supported by the large piston?
A.1000 N
B.5000 N
C.10000 N
D.50000 N
Explanation: By Pascal's principle, pressure transmitted through an enclosed incompressible fluid is equal everywhere: P = F₁ / A₁ = F₂ / A₂. Thus, F₂ = F₁ * (A₂ / A₁) = 200 N * (0.25 m² / 0.005 m²) = 200 N * 50 = 10,000 N.
9Standard atmospheric pressure supports a column of mercury of height 760 mm. Given that the density of mercury is 13,600 kg m⁻³ and the density of water is 1000 kg m⁻³, what vertical height of water column would support the same atmospheric pressure?
A.0.76 m
B.5.59 m
C.10.34 m
D.13.60 m
Explanation: Equal pressure requires h_water * ρ_water * g = h_mercury * ρ_mercury * g. Cancelling g gives h_water = (h_mercury * ρ_mercury) / ρ_water = (0.76 m * 13,600 kg m⁻³) / 1000 kg m⁻³ = 10.336 m ≈ 10.34 m.
10A uniform metre rule is balanced horizontally at its 50 cm mark. A mass of 40 g is suspended at the 20 cm mark. At which position along the rule must a mass of 60 g be suspended to maintain horizontal equilibrium?
A.30 cm mark
B.60 cm mark
C.70 cm mark
D.80 cm mark
Explanation: By the principle of moments about the pivot at 50 cm: anticlockwise moment = clockwise moment. Anticlockwise distance = 50 cm - 20 cm = 30 cm. Thus, 40 g * 30 cm = 60 g * d, giving d = 1200 / 60 = 20 cm to the right of the pivot. The mark on the rule is 50 cm + 20 cm = 70 cm mark.

About the UCE Physics Exam

The Uganda Certificate of Education (UCE) Physics examination (Subject Code 535) is administered by the Uganda National Examinations Board (UNEB) at the end of Senior Four. Assessment combines 20% school-based continuous assessment with an 80% national examination comprising theory 535/1 and a laboratory practical, 535/2 or the second practical option 535/3. Compulsory integrated project achievement is reported separately. Official study includes laboratory safety, mechanics, heat, light, waves, electricity, magnetism, Earth and space, and modern physics. This independent bank offers 90 English-language MCQ study questions with explanations. It is not an official translation or format simulation and does not replace written-response or hands-on laboratory practice.

Exam sponsor: Uganda National Examinations Board (UNEB). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Physics includes theory 535/1 and a registered laboratory practical, 535/2 or 535/3. UNEB's NLSC samples allow 2 hr 30 min and 2 hr respectively. The subject grade combines 80% national examination with 20% school-based continuous assessment. Compulsory integrated project achievement is reported separately.

Time Limit

UNEB's NLSC samples allow 2 hours 30 minutes for theory 535/1 and 2 hours for practical 535/2 or 535/3, including the first 15 minutes for reading and planning. Use the current timetable and your registered paper's instructions.

Passing Score

Grades A to E (Competency-Based); Grade D represents the minimum passing competency level.

Exam / Certification Fees

UCE 2026 normal registration: UGX 164,000 for privately sponsored candidates; government pays for qualifying USE-sponsored candidates. This is not a Physics-only charge.

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

24.4% of this practice bank (rounded)

Mechanics and Properties of Matter

Measurements, density, forces, Hooke's law, pressure in solids and fluids, turning effects, center of gravity, linear motion, Newton's laws of motion, momentum, work, energy, power, and simple machines.

18.9% of this practice bank (rounded)

Heat and Thermal Physics

States of matter, thermal expansion, thermometry, heat transfer by conduction, convection and radiation, specific heat capacity, latent heat, evaporation, boiling and cooling curves.

16.7% of this practice bank (rounded)

Waves, Light, and Sound

Transverse and longitudinal waves, wave speed, sound and echoes, plane and convex mirrors, refraction, total internal reflection, optical fibres, dispersion, and colours under different illumination.

22.2% of this practice bank (rounded)

Electricity and Magnetism

Electrostatics, simple DC circuits, Ohm's law, resistance, series and parallel circuits, electrical energy and power, magnetic fields, electromagnetism, motors, generators, transformers, and domestic electrical safety.

16.7% of this practice bank (rounded)

Modern Physics, Electronics, and Earth/Space Physics

Thermionic emission, cathode rays, semiconductor diodes, logic gates, atomic and nuclear structure, radioactivity (alpha, beta, gamma), half-life, nuclear energy, and the solar system and orbital mechanics.

1.1% of this practice bank (rounded)

Introduction and Laboratory Safety

Identifying laboratory hazards, assessing risks, and choosing precautions before practical work.

Preparing for the UCE Physics Exam

What You Need to Know

  • Passing score: Grades A to E (Competency-Based); Grade D represents the minimum passing competency level.
  • Assessment: Physics includes theory 535/1 and a registered laboratory practical, 535/2 or 535/3. UNEB's NLSC samples allow 2 hr 30 min and 2 hr respectively. The subject grade combines 80% national examination with 20% school-based continuous assessment. Compulsory integrated project achievement is reported separately.
  • Time limit: UNEB's NLSC samples allow 2 hours 30 minutes for theory 535/1 and 2 hours for practical 535/2 or 535/3, including the first 15 minutes for reading and planning. Use the current timetable and your registered paper's instructions.
  • Exam / certification fees: UCE 2026 normal registration: UGX 164,000 for privately sponsored candidates; government pays for qualifying USE-sponsored candidates. This is not a Physics-only charge. Official sources

Using Our Practice Resources

  • Work through all 90 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

UCE Physics: Suggested Study Strategy

1Master the fundamental SI units and prefixes, and practice unit conversions (e.g., cm³ to m³, g cm⁻³ to kg m⁻³, and km h⁻¹ to m s⁻¹) before attempting quantitative mechanics questions.
2Memorize and understand the foundational physical equations: Newton's second law (F = ma), equations of uniformly accelerated motion, pressure formula (P = ρgh), Ohm's law (V = IR), wave equation (v = fλ), and specific heat capacity (Q = mcΔθ).
3Sketch clear ray diagrams for plane mirrors, curved mirrors, and converging lenses, paying careful attention to principal rays, virtual image conventions, and focal lengths.
4Review the key differences between series and parallel circuits, especially how potential difference and current divide, and remember that domestic appliances are wired in parallel.
5Understand half-life calculations through step-by-step decay fractions rather than attempting to apply complex logarithmic formulas that are not required at O-Level.

Frequently Asked Questions

What is the subject code and official format for UCE Physics?

Physics has subject code 535: theory 535/1 and laboratory practical 535/2, with 535/3 as a second practical option for large centres. UNEB's NLSC samples allow 2 hours 30 minutes for theory and 2 hours for practical. Candidates take their registered practical option, not both practical papers.

How is the final grade determined for UCE Physics under the New Lower Secondary Curriculum?

The subject grade combines 20% school-based continuous assessment scores with 80% from the UNEB national examination: theory 535/1 and the registered practical, 535/2 or 535/3. Compulsory integrated project achievement is assessed and reported separately.

What registration fees apply for UCE candidates in 2026?

The standard UCE registration fee is UGX 164,000 for privately sponsored candidates. For students enrolled under the government Universal Secondary Education (USE) scheme, the fee is fully covered by the government of Uganda.

Does this practice bank simulate the UNEB laboratory practical exam?

No. These 90 multiple-choice questions provide an independent English-language conceptual and quantitative study adaptation. They reinforce theoretical understanding, experimental principles, data analysis, and mathematical problem solving, but do not replace hands-on laboratory apparatus setup, experimental data collection, or written report construction.