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Sample Myanmar Matriculation Physics Practice Questions

Try these sample questions to review concepts for the Myanmar Matriculation Physics exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A flywheel accelerates uniformly from an angular velocity of 12 rad/s to 36 rad/s over a time interval of 8.0 s. What is its angular acceleration, and through what total angle does it rotate during this period?
A.3.0 rad/s² and 192 rad
B.3.0 rad/s² and 96 rad
C.6.0 rad/s² and 192 rad
D.2.4 rad/s² and 288 rad
Explanation: Using rotational kinematic equations: Angular acceleration α = (ω - ω0) / t = (36 rad/s - 12 rad/s) / 8.0 s = 24 / 8.0 = 3.0 rad/s². Angular displacement θ = ((ω0 + ω) / 2) * t = ((12 + 36) / 2) * 8.0 = 24 * 8.0 = 192 rad (or θ = ω0 t + 1/2 α t² = 12(8.0) + 0.5(3.0)(64) = 96 + 96 = 192 rad).
2A uniform solid disk of mass M = 4.0 kg and radius R = 0.50 m rotates about a fixed frictionless axis perpendicular to the disk through its center at an angular speed of 20 rad/s. What is the rotational kinetic energy of the disk?
A.50 J
B.100 J
C.200 J
D.400 J
Explanation: For a uniform solid disk rotating about its central axis, the moment of inertia is I = 1/2 M R² = 1/2 * (4.0 kg) * (0.50 m)² = 2.0 * 0.25 = 0.50 kg·m². The rotational kinetic energy is KE_rot = 1/2 I ω² = 1/2 * (0.50 kg·m²) * (20 rad/s)² = 0.25 * 400 = 100 J.
3A constant tangential force of 15 N is applied to the rim of a uniform solid cylinder of mass 6.0 kg and radius 0.40 m, pivoted on frictionless bearings along its central longitudinal axis. What is the resulting angular acceleration of the cylinder?
A.6.25 rad/s²
B.12.5 rad/s²
C.25.0 rad/s²
D.37.5 rad/s²
Explanation: Torque applied τ = F * R = 15 N * 0.40 m = 6.0 N·m. Moment of inertia of a solid cylinder I = 1/2 M R² = 0.5 * (6.0 kg) * (0.40 m)² = 3.0 * 0.16 = 0.48 kg·m². By Newton's second law for rotation, τ = I α, so α = τ / I = 6.0 N·m / 0.48 kg·m² = 12.5 rad/s².
4A figure skater spins with arms outstretched at an angular speed of 3.0 rad/s with a moment of inertia of 2.4 kg·m². When she pulls her arms inward, her moment of inertia decreases to 0.80 kg·m². Assuming zero net external torque, what is her new angular speed and by what factor does her rotational kinetic energy change?
A.9.0 rad/s; increases by a factor of 3
B.9.0 rad/s; remains unchanged
C.6.0 rad/s; increases by a factor of 2
D.1.0 rad/s; decreases by a factor of 3
Explanation: By conservation of angular momentum, L = I1 ω1 = I2 ω2: (2.4 kg·m²)(3.0 rad/s) = (0.80 kg·m²) ω2 => ω2 = 7.2 / 0.80 = 9.0 rad/s. Initial kinetic energy KE1 = 1/2 I1 ω1² = 0.5 * 2.4 * (3.0)² = 10.8 J. Final kinetic energy KE2 = 1/2 I2 ω2² = 0.5 * 0.80 * (9.0)² = 32.4 J. Ratio KE2 / KE1 = 32.4 / 10.8 = 3 (kinetic energy increases threefold because the skater does internal mechanical work pulling her arms inward).
5A uniform solid sphere of mass M and radius R rolls without slipping down an inclined plane of inclination angle θ. What is the linear acceleration of its center of mass along the incline?
A.(1/2) g sin θ
B.(2/3) g sin θ
C.(5/7) g sin θ
D.g sin θ
Explanation: For rolling without slipping down an incline, the linear acceleration is given by a = (g sin θ) / (1 + I / (M R²)). For a uniform solid sphere, I = 2/5 M R², so I / (M R²) = 2/5. Therefore, a = (g sin θ) / (1 + 2/5) = (g sin θ) / (7/5) = (5/7) g sin θ.
6For an extended rigid body to remain in complete mechanical equilibrium, which condition(s) must be fulfilled?
A.The net external force must be zero, but net torque can be non-zero
B.The net external torque about any point must be zero, but net force can be non-zero
C.The vector sum of all external forces must be zero and the vector sum of all external torques about any arbitrary axis must be zero
D.The body must have constant non-zero angular momentum
Explanation: Complete mechanical equilibrium requires both translational equilibrium (Σ F_ext = 0, so linear acceleration is zero) and rotational equilibrium (Σ τ_ext = 0 about any arbitrary point, so angular acceleration is zero).
7A uniform horizontal beam of length 4.0 m and mass 30 kg is hinged to a vertical wall at one end and supported by a cable attached to its other end. The cable makes an angle of 30° above the horizontal beam. Taking g = 9.8 m/s², what is the tension in the cable?
A.147 N
B.294 N
C.588 N
D.339 N
Explanation: Weight of the uniform beam W = m g = 30 kg * 9.8 m/s² = 294 N, acting downward at the beam's center of gravity (L/2 = 2.0 m from the hinge). Taking torques about the hinge pivot: Σ τ = (T sin 30°) * L - W * (L / 2) = 0. T * (0.50) * 4.0 m = 294 N * 2.0 m => 2.0 T = 588 => T = 294 N.
8Which physical modulus is defined as the ratio of tensile (or compressive) stress to longitudinal strain within the proportional limit of an elastic material?
A.Shear modulus (modulus of rigidity)
B.Young's modulus
C.Bulk modulus
D.Poisson's ratio
Explanation: Young's modulus (Y) is defined as the ratio of tensile (or compressive) stress (F/A) to tensile strain (ΔL/L0) within the elastic limit. Shear modulus relates shear stress to shear strain, bulk modulus relates hydraulic stress to volume strain, and Poisson's ratio is the ratio of lateral strain to axial strain.
9A steel wire of length 2.0 m and cross-sectional area 2.0 × 10^-6 m² is stretched by a suspended load of 400 N. If Young's modulus for steel is 2.0 × 10^11 N/m², what is the elongation of the wire?
A.0.50 mm
B.1.0 mm
C.2.0 mm
D.4.0 mm
Explanation: From Hooke's Law: Y = (F / A) / (ΔL / L0) => ΔL = (F * L0) / (A * Y). ΔL = (400 N * 2.0 m) / (2.0 × 10^-6 m² * 2.0 × 10^11 N/m²) ΔL = 800 / (4.0 × 10^5) = 2.0 × 10^-3 m = 2.0 mm.
10A metal wire of length L and cross-sectional area A is stretched by an extension e within its proportional limit. Which expression correctly gives the elastic potential energy stored per unit volume (energy density) in the wire?
A.Young's modulus * strain
B.1/2 * stress * strain
C.stress * strain
D.1/2 * Young's modulus * strain
Explanation: The total work done in stretching the wire is U = 1/2 F e. Dividing by the wire volume V = A L gives the energy density: u = U / V = (1/2 F e) / (A L) = 1/2 * (F/A) * (e/L) = 1/2 * stress * strain (which can also be written as 1/2 Y (strain)² or (stress)² / (2Y)).

About the Myanmar Matriculation Physics Exam

The Myanmar Matriculation Examination (တက္ကသိုလ်ဝင်တန်း စာမေးပွဲ) in Physics is a science-track paper administered annually by the Department of Myanmar Examinations (DME), Ministry of Education. It assesses upper-secondary students on Grade 12 mechanics, fluid dynamics, thermodynamics, wave optics, electromagnetic induction, quantum phenomena, and special relativity. The official exam is a 3-hour written paper in English, and this local bank is an independent English-language MCQ study adaptation.

Exam sponsor: Department of Myanmar Examinations (DME), Ministry of Education. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

The official exam is a 3-hour national written paper in English comprising objective, short-answer, and numerical calculation sections; this local bank is an independent English-language MCQ study adaptation.

Time Limit

180 minutes

Passing Score

DME's current public materials do not publish a uniform per-subject numeric cutoff.

Exam / Certification Fees

MMK 200 application form fee plus MMK 700 education stamp (MMK 900 total)

Exam sponsor website

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

Official sources

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.

~20%

Rotational Motion, Elasticity & Fluids

Rotational kinematics, moment of inertia, torque, angular momentum, Hooke's law, elastic moduli, fluid statics, and Bernoulli's equation.

~20%

Thermodynamics, Heat Transfer & Engines

Thermal conduction, convection, radiation, first and second laws of thermodynamics, gas processes, Carnot efficiency, and heat engines.

~20%

Waves, Sound, Doppler & Physical Optics

Acoustic intensity, Doppler frequency shifts, wave superposition, double-slit interference, diffraction gratings, and light polarization.

~20%

Capacitors, Induction & Power Systems

Capacitance, electrical energy storage, Faraday's and Lenz's laws of induction, transformers, AC power distribution, and digital communication basics.

~20%

Nuclear Physics, Quantum & Relativity

Radioactive decay laws, nuclear binding energy, photoelectric effect, de Broglie matter waves, postulates of special relativity, and time dilation.

Preparing for the Myanmar Matriculation Physics Exam

What You Need to Know

  • Passing score: DME's current public materials do not publish a uniform per-subject numeric cutoff.
  • Assessment: The official exam is a 3-hour national written paper in English comprising objective, short-answer, and numerical calculation sections; this local bank is an independent English-language MCQ study adaptation.
  • Time limit: 180 minutes
  • Exam / certification fees: MMK 200 application form fee plus MMK 700 education stamp (MMK 900 total) Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Myanmar Matriculation Physics: Suggested Study Strategy

1Practise applying Bernoulli's equation and the continuity equation to fluid flow and pressure problems.
2Master calculating Carnot engine thermal efficiency and work done in thermodynamic isobaric and adiabatic cycles.
3Work through the Doppler effect formula for moving sound sources and observers with proper sign conventions.

Frequently Asked Questions

Is this the official exam format?

No. The official exam is a 3-hour national written paper comprising objective, short-answer, and numerical calculation questions; this local bank is an independent English-language MCQ study adaptation.

What language is the official assessment offered in?

The prescribed Grade 12 Physics textbook and question paper are in English (officialLanguages: ['en']).

Are quantitative calculation problems included?

Yes. Numerical calculation problems covering fluid pressure, thermodynamic work, Doppler shifts, transformer ratios, and relativistic mass-energy equivalence are included.