MCAT · Physics · United States

Physics for the MCAT Exam — U.S. candidates

10% of the MCAT test plan. Kinematics, mechanics, thermodynamics, optics, electrostatics, and circuits are tested in the MCAT C/P section with a biological and clinical context. Calibrated for American candidates.

Examiners do not award marks for content alone — they award them for the ability to demonstrate competency in the precise format the test demands. Physics sits at roughly 10% of the Medical College Admission Test content distribution — Physics comprises roughly 25% of the C/P section. Unlike an undergraduate physics course, MCAT physics questions are almost always passage-based and apply concepts to biological systems: fluid mechanics (blood pressure, Poiseuille's law), optics (the eye as a lens), circuits (membrane potential analogies), and sound (ultrasound, Doppler). Mastery requires understanding the conceptual meaning of each equation, not just plugging numbers in. In 2024, the published overall rate for MCAT candidates in United States was 50% (AAMC — MCAT Total Score Percentile Ranks (median = 501)). For U.S. candidates preparing for MCAT, the calibration of study to local context matters: U.S. licensure exams are governed at the state level (CDL, NCLEX) or by national boards (MCAT, GRE). Pearson VUE and PSI are the dominant test-delivery vendors.

Common failure modes

These are the patterns that cause most candidates to lose marks on this topic. Recognising them in advance is half the work.

!Not recognising when to use kinematics vs. energy conservation — both may solve a problem, but one is much faster
!Confusing series and parallel resistance/capacitance rules — they invert between the two configurations
!Misapplying the lens equation (1/f = 1/do + 1/di) — especially sign conventions for concave vs. convex lenses
!Forgetting that MCAT fluid mechanics uses Bernoulli and Poiseuille — both appear in cardiovascular physiology passages

Study tips

1Memorize the six key physics equations that AAMC lists as foundational: F = ma, W = Fd, P = W/t, PV = nRT, Q = mcΔT, and the wave equation v = fλ.
2Practice Bernoulli's equation using blood-flow examples. Venturi effect (narrowed vessels = faster flow, lower pressure) is a common MCAT passage theme.
3Drill the thin-lens equation with sign conventions: real images have positive image distance; virtual images negative. For the eye, hyperopia needs converging lens, myopia diverging.
4Review the Doppler effect conceptually — the MCAT tests direction (source approaching = higher frequency) more than calculation.
5If you are testing in the U.S., expect MCAT delivery via Pearson VUE or PSI test centres — register through the official board portal at least 30 days in advance.

Sample MCAT Physics questions

These sample items mirror the format and difficulty of real MCAT questions. Practice with thousands more on the free Koydo question bank.

1
A ball is dropped from rest at a height of 80 m. Ignoring air resistance, what is the ball's speed just before it hits the ground? (g = 10 m/s²)
- A20 m/s
- B40 m/sCorrect
- C80 m/s
- D160 m/s
Why this answer?
Using energy conservation: mgh = ½mv². Simplify: v = √(2gh) = √(2 × 10 × 80) = √1600 = 40 m/s. This is faster than using kinematics equations and reflects the MCAT preference for energy methods. (Illustrative.)
2
A patient has a blood vessel with radius r. Atherosclerosis reduces the radius to r/2. By what factor does resistance to blood flow change? (Poiseuille's Law: R ∝ 1/r⁴)
- A2-fold increase
- B4-fold increase
- C8-fold increase
- D16-fold increaseCorrect
Why this answer?
Poiseuille's Law: resistance R = 8ηL/(πr⁴). If r decreases by factor of 2, resistance increases by 2⁴ = 16-fold. This is why even modest arterial narrowing dramatically increases cardiac work — a high-yield MCAT physiology-physics bridge concept.
3
An object is placed 30 cm from a converging lens with focal length 10 cm. The image is:
- AVirtual, erect, and magnified
- BReal, inverted, and located 15 cm beyond the lensCorrect
- CReal, inverted, and located at infinity
- DVirtual, inverted, and diminished
Why this answer?
1/f = 1/do + 1/di → 1/10 = 1/30 + 1/di → 1/di = 1/10 − 1/30 = 3/30 − 1/30 = 2/30 → di = 15 cm. Positive di means the image is real and on the opposite side of the lens. Real images from converging lenses are always inverted.

Frequently asked questions

How much calculus is on the MCAT physics section?

None. MCAT physics uses algebra only. There are no derivatives or integrals in the test questions. Understanding the conceptual meaning of calculus-derived formulas (like work as area under a force-displacement curve) is sufficient.

Is electromagnetic induction tested on the MCAT?

The MCAT includes basic electromagnetism: Coulomb's law, electric field and potential, and simple circuits (Ohm's law, Kirchhoff's rules). Faraday's law and induction appear only at a conceptual level. Focus on electrostatics, basic circuits, and magnetism concepts over complex induction problems.

What is the MCAT Physics pass rate for American candidates?

The published overall rate for MCAT candidates in United States in 2024 was 50%, according to AAMC — MCAT Total Score Percentile Ranks (median = 501). Pass rates within specific topics like Physics are not separately published, but the topic represents roughly 10% of the exam.

How long should American candidates study Physics for the MCAT?

For most candidates, focused mastery of Physics requires 20–40 hours of deliberate practice — drilling sample questions, reviewing failure modes, and timing yourself against exam conditions. U.S. licensure exams are governed at the state level (CDL, NCLEX) or by national boards (MCAT, GRE). Pearson VUE and PSI are the dominant test-delivery vendors. Combine Physics study with full-length mock exams in the final two weeks before your test date.

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Related study guides

Regulatory citation: AAMC MCAT 2015 Content Specifications — Chemical and Physical Foundations of Biological Systems.