MDCAT Physics MCQs by Chapter: Mechanics, Optics & Electrostatics

MDCAT Physics spans several distinct chapters, and three of them are tested every year without exception: Mechanics, Optics, and Electrostatics. Here's a chapter-by-chapter sample so you can see exactly where each concept sits before you start drilling at scale.

Preparing for MDCAT? Practise explanation-backed MCQs in the MDCAT QBank. Your first 20 questions are free.

Chapter: Mechanics

1. According to Newton's Second Law of Motion, the net force acting on a body is equal to:

• A) Its mass divided by acceleration
• B) Its mass multiplied by acceleration ✅
• C) Its velocity multiplied by time
• D) Its weight divided by gravity

2. A ball thrown horizontally from a height falls to the ground in a curved path because:

• A) Its horizontal velocity decreases over time
• B) Gravity acts on it only after it stops moving forward
• C) Gravity accelerates it downward while its horizontal velocity stays constant ✅
• D) Air resistance pulls it sideways

3. An object moving in a circle at constant speed experiences a net force directed:

• A) Away from the centre
• B) Tangent to the circle
• C) Toward the centre ✅
• D) In the direction of motion

Chapter: Optics

4. When light travels from air into glass, it bends:

• A) Away from the normal
• B) Toward the normal ✅
• C) Parallel to the surface
• D) Not at all

5. A convex (converging) lens forms a real, inverted image of an object placed:

• A) At the optical centre only
• B) Beyond its focal length ✅
• C) Exactly at infinity only
• D) Behind the lens

6. Total internal reflection can only occur when light travels from:

• A) A rarer medium into a denser medium
• B) A denser medium into a rarer medium, beyond the critical angle ✅
• C) Any medium into a vacuum
• D) A vacuum into any medium

Chapter: Electrostatics

7. According to Coulomb's Law, the electrostatic force between two point charges is:

• A) Directly proportional to the distance between them
• B) Inversely proportional to the product of the charges
• C) Directly proportional to the product of the charges and inversely proportional to the square of the distance between them ✅
• D) Independent of both charge and distance

8. Electric field lines around an isolated positive point charge point:

• A) Inward, toward the charge
• B) Outward, away from the charge ✅
• C) Parallel to each other in one fixed direction
• D) In circles around the charge

9. The capacitance of a capacitor is defined as the ratio of:

• A) Voltage to charge stored
• B) Charge stored to the potential difference across it ✅
• C) Current to voltage
• D) Energy to current

Why Chapter-by-Chapter Beats a Flat Question List

Mechanics, Optics, and Electrostatics are tested with remarkable consistency year after year, but they reward different kinds of preparation — Mechanics rewards comfort with formulas under time pressure, Optics rewards clear mental models of how light actually bends and reflects, and Electrostatics rewards careful attention to direction and sign. Practising them as separate chapters, each with an explanation, makes it easier to see which one actually needs more of your time.

HighYield's MDCAT question bank is organised by subject and topic across all four MDCAT subjects, every question explained. For the other three Physics chapters, see our Waves, Electromagnetism & Modern Physics set, or for the concepts that repeat most often across all subjects, see Most Repeated MDCAT MCQs by Subject. Try the first 20 questions of the full bank free, no sign-in required, from the MDCAT question bank page.