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MCAT Physics Questions
Practise physics (science) for the Medical College Admission Test: 10 multiple-choice questions, each with the correct answer and a worked explanation. Click an option to check it, or “New questions” for another set.
Physics practice
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Q1.The unit of electrical resistance is the:
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Answer: B — Ohm
Resistance is measured in ohms (Ω).
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Q2.What force is needed to accelerate a 24 kg mass at 9 m/s²?
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Answer: C — 216 N
F = ma = 24 × 9 = 216 N.
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Q3.Which law states that every action has an equal and opposite reaction?
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Answer: C — Newton’s third law
Newton’s third law.
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Q4.Find the power dissipated when 2.5 A flows through a 20 Ω resistor.
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Answer: C — 125 W
P = I²R = 2.5² × 20 = 125 W.
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Q5.Acceleration due to gravity on Earth’s surface is about:
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Answer: A — 9.8 m/s²
g ≈ 9.8 m/s².
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Q6.What force is needed to accelerate a 23 kg mass at 6 m/s²?
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Answer: C — 138 N
F = ma = 23 × 6 = 138 N.
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Q7.The speed of light in vacuum is approximately:
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Answer: B — 3 × 10⁸ m/s
c ≈ 2.998 × 10⁸ m/s.
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Q8.A body with initial velocity 2 m/s accelerates at 3 m/s² for 9 s. Find the distance covered.
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Answer: A — 139.5 m
s = ut + ½at² = 2×9 + ½×3×9² = 139.5 m.
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Q9.Work done is zero when the force is:
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Answer: C — Perpendicular to displacement
W = Fd cos θ; at 90° cos θ = 0.
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Q10.Find the power dissipated when 0.5 A flows through a 12 Ω resistor.
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Answer: D — 3 W
P = I²R = 0.5² × 12 = 3 W.
How to approach physics questions
Write the formula before substituting and keep SI units throughout. Most numerical questions use one of: v = u + at, s = ut + ½at², F = ma, KE = ½mv², V = IR, P = I²R.
About MCAT
Medical College Admission Test — conducted by Association of American Medical Colleges (AAMC). Medical school admission test covering biological, chemical, physical, psychological and social foundations.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
MCAT practice topics
| Topic | Section | Question source |
|---|---|---|
| Biology | Science | Question bank |
| Chemistry | Science | Calculated + question bank |
| Physics | Science | Calculated + question bank |