1Units and Dimensions
Question 1: Units and Dimensions
Which of the following is the unit of kinetic energy written in SI base units?
Ek = 12mv2: kg × (m/s)2 = kg m2 s−2 (the joule). kg m s−1 is momentum, kg m s−2 is force and kg m2 s−3 is power.
Free mock quiz · IMAT Physics
IMAT Physics Mock Quiz 2
Ten exam-style questions, one from every topic of the IMAT physics syllabus. Every question you master brings you one step closer to your place in medical school.
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Free mock quiz – not an official test. This is a free practice (mock) quiz written according to the official IMAT physics syllabus. It is not an official IMAT test and is not produced or endorsed by the IMAT organisers or the Italian Ministry of University and Research.
Units and DimensionsKinematicsHarmonic MotionForces: Inclined PlaneWork and EnergyFluids: Archimedes' PrincipleThermodynamics: First LawElectrostaticsElectric CircuitsMagnetism and Induction
Choose one answer for each question. You will see straight away whether you are right, with a short worked solution. Treat it like exam day: no notes, and a calculator only if your exam allows one.
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2Kinematics
Question 2: Kinematics
An object moving at 4.0 m/s accelerates uniformly at 2.0 m/s2 for 3.0 s. How far does it travel in this time?
s = ut + 12at2 = 4.0 × 3.0 + 12 × 2.0 × 3.02 = 12 + 9.0 = 21 m.
3Harmonic Motion
Question 3: Harmonic Motion
A 0.50 kg mass oscillates on a spring of spring constant 50 N/m. What is the period of oscillation, approximately?
T = 2π = 2π = 2π × 0.10 ≈ 0.63 s.
4Forces: Inclined Plane
Question 4: Forces: Inclined Plane
A block slides down a frictionless slope inclined at 30° to the horizontal. What is its acceleration? (g = 10 m/s2)
Only the component of the weight along the slope accelerates the block: a = g sin 30° = 10 × 0.5 = 5.0 m/s2.
5Work and Energy
Question 5: Work and Energy
A spring of spring constant 400 N/m is compressed by 0.10 m. How much elastic potential energy does it store?
E = 12kx2 = 12 × 400 × 0.102 = 2.0 J.
6Fluids: Archimedes' Principle
Question 6: Fluids: Archimedes' Principle
An object weighs 12 N in air and 8.0 N when fully submerged in water (density 1000 kg/m3). What is its volume? (g = 10 m/s2)
Buoyant force = 12 − 8.0 = 4.0 N = ρVg, so V = 4.01000 × 10 = 4.0 × 10−4 m3.
7Thermodynamics: First Law
Question 7: Thermodynamics: First Law
A gas absorbs 500 J of heat and at the same time does 200 J of work on its surroundings. What is the change in its internal energy?
First law: ΔU = Q − W = 500 − 200 = +300 J. The work done by the gas takes energy away.
8Electrostatics
Question 8: Electrostatics
A charge of +2.0 μC is moved from a point at a potential of 10 V to a point at a potential of 60 V. How much work must be done on the charge?
W = qΔV = 2.0 × 10−6 × (60 − 10) = 1.0 × 10−4 J. Only the potential difference matters, not the individual potentials.
9Electric Circuits
Question 9: Electric Circuits
An electric kettle rated at 2.0 kW is switched on for 3.0 minutes. How much electrical energy does it transfer?
E = Pt = 2000 × 180 = 360 000 J = 360 kJ. (Remember to convert minutes to seconds.)
10Magnetism and Induction
Question 10: Magnetism and Induction
A particle with charge 2.0 μC moves at 3.0 × 103 m/s at right angles to a uniform magnetic field of 0.50 T. What is the magnetic force on it?
Lorentz force: F = qvB = 2.0 × 10−6 × 3.0 × 103 × 0.50 = 3.0 × 10−3 N, perpendicular to both v and B.
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All questions are original practice questions written by Christos Fotakidis following the published IMAT syllabus. They are not official IMAT questions, they are not taken from any past paper, and this page is not affiliated with the IMAT organisers or the Italian Ministry of University and Research.