An astronaut takes a spacewalk at a distance from the Earth's surface equal to three times the Earth's radius. What fraction of g corresponds to the acceleration experienced by the astronaut?
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The decree gives Physics and Mathematics 13 questions together and does not fix the split. In the official papers physics took 6 questions in 2024 and 2025 and 7 in 2026 — roughly 9–10 of the 90 points.
Questions test relations and proportional reasoning more than long calculations: how gravity scales with distance, how resistors combine, how pressure grows with depth. Numbers are chosen for mental arithmetic (g ≈ 10 m/s²).
Análisis de la distribución de preguntas
Temas de Physics de IMAT: frecuencia
¿Qué temas requieren más atención? Este es el desglose por temas a partir de nuestros datos de preguntas de IMAT:
| Tema | Total | |
|---|---|---|
| Electricity & Magnetism | 5 | |
| Kinematics | 3 | |
| Waves, Optics & Oscillations | 3 | |
| Dynamics & Gravitation | 2 | |
| Fluid Mechanics | 2 | |
| Work & Energy | 2 | |
| Thermodynamics & Gases | 1 |
*Question counts per topic in the official IMAT 2024, 2025 and 2026 papers (MUR), physics questions of the 13-question Physics & Mathematics block, tagged by the PrepTest question bank. Not every question is in our bank yet (2024: 5 of 6). Topics are grouped by PrepTest; the topic mix changes from year to year, so treat the table as a guide to priorities, not a prediction.
Ideas clave
- Electricity & magnetism appears every year (5 questions in 3 years): Ohm's law, power, resistor networks, charges in magnetic fields.
- Mechanics — kinematics, dynamics, gravitation and energy — is the largest group overall (7 questions) and took 4 of the 7 physics questions in 2026.
- Fluids appeared in 2025 and 2026: pressure on container walls and pressure versus depth.
- Oscillations, waves and thermodynamics took 3 questions in 2024 and 1 in 2026 — learn the core relations only.
Análisis de dificultad
Dificultad de los temas y reparto de estudio recomendado
No todos los temas exigen el mismo tiempo. Algunos requieren mucha práctica resolviendo problemas; otros dependen de recordar con precisión conceptos concretos:
Difícil
Electricity & Magnetism 1.5 weeksMedio
Dynamics, Gravitation & Energy 1.5 weeksMedio
Kinematics 1 weekMedio
Fluid Mechanics 4–5 daysMedio
Thermodynamics 4–5 daysFácil
Quantities & Measurement 2–3 days¿No sabes por dónde empezar tu preparación?
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Temas de Physics de IMAT: cómo se evalúa cada uno
Un repaso tema por tema de la sección de Physics del official MUR IMAT syllabus (DM 1005/2026, Allegato A):
01
Physical Quantities & Measurement Fácil
- Fundamental and derived quantities; SI and technical units; multiples and submultiples.
- Scientific notation and unit conversions.
- Scalars, vectors and vector operations.
Cómo aparece en IMAT: Unit conversions inside other questions (km/h → m/s before computing kinetic energy) more than stand-alone items.
02
Kinematics Medio
- Velocity, acceleration, angular velocity and centripetal acceleration.
- Uniform and uniformly accelerated rectilinear motion; uniform circular motion.
- Harmonic motion.
Cómo aparece en IMAT: Relative-motion and overtaking problems, definitions (which quantity measures the rate of change of position?) and simple harmonic motion.
03
Dynamics, Gravitation & Energy Medio
- Newton's three laws; weight, elastic force, static and kinetic friction.
- Impulse, momentum and its conservation; universal gravitation.
- Work, kinetic and potential energy, power; energy conservation and dissipation.
Cómo aparece en IMAT: Inverse-square scaling of g, kinetic energy with unit conversion, and what happens to mechanical energy when friction acts.
04
Fluid Mechanics Medio
- Density, pressure; Pascal, Stevin and Archimedes.
- Flow rate and the continuity equation.
- Bernoulli's equation; viscosity.
Cómo aparece en IMAT: Hydrostatic pressure versus depth (≈ 1 atm per 10 m of water) and the direction of forces a liquid exerts on walls.
05
Thermodynamics Medio
- Temperature, heat, calorimetry and specific heat; changes of state and latent heat.
- Ideal gas laws.
- First and second law of thermodynamics.
Cómo aparece en IMAT: Gas-law proportionality (pressure at constant temperature when the volume triples) and conceptual first-law items.
06
Electricity & Electromagnetism Difícil
- Coulomb's law, electric field and potential, capacitors.
- Current, resistance, Ohm's law, Joule heating; resistors in series and parallel.
- Magnetic fields, forces on moving charges, electromagnetic induction.
Cómo aparece en IMAT: Equivalent resistance of networks, , the direction of charge carriers in a wire, and circular motion of an electron in a magnetic field.
Official MUR Syllabus
The official IMAT programme is Allegato A of the Ministry of University and Research decree for the 2026/27 admission test:
MUR — DM n. 1005 of 06-08-2026Problemas de examen resueltos
Preguntas de ejemplo de Physics de IMAT y tácticas de eliminación
Descubre cómo se construyen las preguntas de physics de IMAT y cómo una eliminación disciplinada evita la penalización de −0.4:
An electric circuit consists of 100 branches connected in parallel. Each branch has 10 resistors in series, each with a value of R. What is the equivalent resistance?
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To what depth must one dive in the sea for the pressure to double relative to that at the surface?
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Análisis de trampas del examen
Los 5 errores más comunes en Physics de IMAT
Errores conceptuales y tácticos recurrentes que les cuestan puntos decisivos a los estudiantes:
01
Height vs distance from the centre
Gravitational formulas use the distance from the Earth's centre. Add the Earth's radius to the altitude.
02
Forgetting unit conversions
36 km/h is 10 m/s. Convert before squaring in — options are built from the unconverted value.
03
Current direction vs electron direction
Conventional current flows opposite to the electrons. In a metal wire only the electrons move.
04
Linear thinking
Gravity and Coulomb force go as ; kinetic energy and Joule power go as the square of speed or current.
05
Gauge vs absolute pressure
‘Pressure doubles’ refers to absolute pressure: the 1 atm of the atmosphere is already there at the surface.
Hoja de ruta de estudio
Hoja de ruta estratégica de estudio de 10 semanas
Weeks 1–2
Diagnostic & Foundations
Take a timed diagnostic; rebuild the topics marked ‘Easy’ and note every error type: concept, reading or calculation.
Weeks 3–5
Biology & Chemistry First
38 of the 60 questions are Biology and Chemistry. Work through their ‘Medium’ and ‘Hard’ topics in the order of the frequency tables.
Weeks 6–7
Physics, Maths & Logic
Cover the 13-question Physics & Mathematics block and the 5 logic questions with short mixed sets; aim for about 90 seconds per question.
Weeks 8–9
Full Mocks
One full 60-question, 100-minute IMAT mock per week; review every wrong and every guessed answer.
Week 10
Final Polish
Re-do your error log, revise the traps, and practise the skip-or-answer rule: a wrong answer costs −0.4, a blank costs nothing.