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MDCAT Physics MCQs with answers

Practise MDCAT Physics (PMDC 2025-26) with 315 exam-style MCQs, each with the answer and a short explanation. Every test is marked the moment you finish and shows your score chapter by chapter, so you know what to revise next. It is free and needs no sign-up.

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MDCAT Physics MCQs with answers

Practise MDCAT Physics (PMDC 2025-26) with 315 exam-style MCQs, each with the answer and a short explanation. Every test is marked the moment you finish and shows your score chapter by chapter, so you know what to revise next. It is free and needs no sign-up.

315 questions · 16 chapters

What each chapter covers 16 chapters

The questions follow the syllabus chapter by chapter. You can test the whole subject or one chapter at a time.

  1. Physics · Vectors and equilibrium 18 questionsVectors and components, Products of vectors and torque
  2. Physics · Force and motion 27 questionsKinematics, Newton's laws and momentum, Projectile motion
  3. Physics · Work, power and energy 18 questionsWork and power, Energy and its conservation
  4. Physics · Circular and rotational motion 18 questionsAngular motion and centripetal force, Rotational dynamics
  5. Physics · Fluid dynamics 18 questionsViscosity and drag, Continuity and Bernoulli
  6. Physics · Waves and oscillations 27 questionsSimple harmonic motion, Progressive waves, Stationary waves and sound
  7. Physics · Thermodynamics 18 questionsKinetic theory and the first law, Heat engines and entropy
  8. Physics · Electrostatics 18 questionsCoulomb's law and electric field, Potential and capacitors
  9. Physics · Current electricity 18 questionsResistance and Ohm's law, Circuits, EMF and power
  10. Physics · Electromagnetism 18 questionsMagnetic fields and forces, Charges in magnetic fields
  11. Physics · Electromagnetic induction 19 questionsFaraday's and Lenz's laws, Inductance, generators and transformers
  12. Physics · Alternating current 19 questionsAC quantities, AC circuits
  13. Physics · Physics of solids and electronics 20 questionsProperties of solids, Electronics
  14. Physics · Dawn of modern physics 20 questionsPhotons and the photoelectric effect, Wave nature of particles
  15. Physics · Atomic spectra 19 questionsBohr model and spectra, X-rays and lasers
  16. Physics · Nuclear physics 20 questionsNucleus and radioactivity, Nuclear energy and radiation
Sample MDCAT Physics MCQs with answers 12 questions

12 questions from the test, one or two from each chapter. Try each one, then open the answer.

1. A ceiling fan turns at a constant angular velocity. Which statement about the fan is correct?

  1. A
    the net torque on it acts in the direction of rotation
  2. B
    it cannot be in equilibrium because it is rotating
  3. C
    the net torque on it is zero
  4. D
    the net force on each of its blades is zero
Show answer

Answer: C. Constant angular velocity means zero angular acceleration, so the motor's torque just balances the torque of air resistance: the fan is in rotational (dynamic) equilibrium. Each blade still needs a centripetal force, so the net force on a blade is not zero.

2. A boy can throw a ball to a greatest horizontal distance of 40 m on level ground. Throwing with the same speed vertically upwards, the greatest height he can reach is

  1. A
    40 m
  2. B
    10 m
  3. C
    80 m
  4. D
    20 m
Show answer

Answer: D. The greatest range is u2/g = 40 m (at 45°). Thrown straight up, the ball rises to u2/2g, half of this: 20 m. 10 m is the height reached in the 45° throw.

3. The momentum of a body is increased by 50%. Its kinetic energy increases by

  1. A
    50%
  2. B
    100%
  3. C
    125%
  4. D
    225%
Show answer

Answer: C. K = p2/2m, so K becomes (1.5)2 = 2.25 times its old value, an increase of 125%. 225% is the new kinetic energy as a percentage of the old one, not the increase.

4. A body moves in a circle at constant angular speed. If the radius of the circle is doubled while the angular speed stays the same, its centripetal acceleration

  1. A
    halves
  2. B
    doubles
  3. C
    becomes four times as large
  4. D
    stays the same
Show answer

Answer: B. a = rω2, so at fixed ω the acceleration is proportional to r and doubles. Using a = v2/r and forgetting that v = rω also doubles leads wrongly to "halves".

5. In steady streamline flow, two streamlines

  1. A
    cross where the speed is greatest
  2. B
    never cross each other
  3. C
    meet wherever the pipe narrows
  4. D
    cross whenever the flow changes direction
Show answer

Answer: B. A streamline shows the direction of the fluid velocity at each point. If two crossed, the fluid at that point would move in two directions at once, which is impossible in steady flow.

6. Sound travels fastest through

  1. A
    steel
  2. B
    water
  3. C
    air
  4. D
    hydrogen gas
Show answer

Answer: A. Sound is fastest in solids, slower in liquids and slowest in gases: roughly 5000 m s−1 in steel, 1500 m s−1 in water and 340 m s−1 in air.

7. In a certain process an ideal gas gives out 300 J of heat, and its internal energy falls by exactly 300 J. Which kind of process is this?

  1. A
    isothermal
  2. B
    adiabatic
  3. C
    isobaric
  4. D
    isochoric
Show answer

Answer: D. By the first law Q = ΔU + W: −300 = −300 + W, so W = 0 and the volume does not change. An isothermal change would have ΔU = 0, an adiabatic one Q = 0, and cooling at constant pressure involves work as the volume shrinks.

8. An oil drop of mass 3.2 × 10−15 kg is held stationary between two horizontal plates 1.0 cm apart with a potential difference of 500 V across them. Taking g = 10 m s−2 and e = 1.6 × 10−19 C, how many excess electrons does the drop carry?

  1. A
    40
  2. B
    4
  3. C
    400
  4. D
    2
Show answer

Answer: B. For balance qE = mg, with E = V/d = 500/0.010 = 5.0 × 104 V m−1. So q = (3.2 × 10−15 × 10) ÷ (5.0 × 104) = 6.4 × 10−19 C = 4e. Leaving d in centimetres gives 400.

9. A uniform wire of resistance 12 Ω is cut into four equal pieces, and the pieces are connected in parallel. The resistance of the combination is

  1. A
    3 Ω
  2. B
    0.75 Ω
  3. C
    48 Ω
  4. D
    1.5 Ω
Show answer

Answer: B. Each piece has a resistance of 12/4 = 3 Ω, and four 3 Ω resistors in parallel give 3/4 = 0.75 Ω. 3 Ω is a single piece, and 48 Ω multiplies instead of dividing.

10. In a moving-coil galvanometer the pole pieces are concave and a soft-iron cylinder sits inside the coil, so the magnetic field is radial. The main purpose of this is to

  1. A
    make the deflection proportional to the current
  2. B
    cancel the field due to the current in the coil
  3. C
    reduce the resistance of the galvanometer coil
  4. D
    stop the coil from oscillating about its position
Show answer

Answer: A. In a radial field the plane of the coil always lies along the field, so the deflecting torque BINA does not change as the coil turns. The deflection θ is then proportional to I, giving an evenly spaced scale.

11. An ideal transformer has 2200 turns on its primary coil, which is connected to a 220 V AC supply. To give an output of 11 V, the number of turns on the secondary coil must be

  1. A
    44000
  2. B
    110
  3. C
    22
  4. D
    1100
Show answer

Answer: B. Vs/Vp = Ns/Np, so Ns = 2200 × 11/220 = 110 turns. Turning the ratio upside down gives 44000.

12. A 60 Ω resistor and an inductor of reactance 80 Ω are connected in series across a 200 V rms AC supply. The average power dissipated in the circuit is

  1. A
    400 W
  2. B
    240 W
  3. C
    320 W
  4. D
    667 W
Show answer

Answer: B. Z = √(602 + 802) = 100 Ω, so Irms = 200/100 = 2.0 A. Only the resistor dissipates power: P = I2R = 4 × 60 = 240 W (the same as VI cos θ = 200 × 2.0 × 0.6). 400 W leaves out the power factor, and 320 W wrongly puts the power in the inductor.

Try 303 more questions

Ways to practise 5 ways

When you get a question wrong, a short note called "The idea behind this" explains the topic it belongs to, with the rules to remember and a worked example.

Common questions

Is this MDCAT Physics test free?

Yes. Every test and every explanation is free, and you do not need an account. If you sign in, your results are kept across your devices.

Are these past paper questions?

The 315 MCQs are our own, written to the syllabus in the style of the exam.

How is the test marked?

Instantly. You get your score, the right answer and an explanation for every question, and a list of the topics to work on.

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