MDCAT Physics MCQs by Chapter: Waves, Electromagnetism & Modern Physics
Chapter-wise MDCAT Physics practice — Waves & Oscillations, Electromagnetism & Electronics, and Modern (Atomic & Nuclear) Physics, three chapters that carry outsized weight in the MDCAT Physics section, with sample MCQs for each.
MDCAT Physics carries 20% of the exam's official weightage, and three chapters do outsized work within it: Waves & Oscillations, Electromagnetism & Electronics, and Modern Physics. Here's a chapter-by-chapter sample so you can target your revision precisely.
Chapter: Waves & Oscillations
1. The distance between two successive crests of a wave is called its:
- A) Amplitude
- B) Wavelength ✅
- C) Frequency
- D) Period
2. If the frequency of a wave increases while its speed stays constant, its wavelength will:
- A) Increase
- B) Stay the same
- C) Decrease ✅
- D) Become zero
3. Increasing the length of a simple pendulum, with everything else unchanged, will:
- A) Decrease its time period
- B) Increase its time period ✅
- C) Leave the time period unchanged
- D) Stop the pendulum
Chapter: Electromagnetism & Electronics
4. A device that converts alternating current (AC) into direct current (DC) is called a:
- A) Transformer
- B) Rectifier ✅
- C) Inductor
- D) Amplifier
5. According to Lenz's law, the direction of an induced current always opposes:
- A) The resistance of the circuit
- B) The change in magnetic flux that produced it ✅
- C) The direction of conventional current
- D) Gravity
6. Silicon is widely used in electronics mainly because it is a:
- A) Perfect insulator
- B) Perfect conductor
- C) Semiconductor ✅
- D) Superconductor
Chapter: Modern Physics
7. The SI unit of radioactivity is the:
- A) Curie
- B) Becquerel ✅
- C) Gray
- D) Sievert
8. In nuclear fusion, energy is released when:
- A) A heavy nucleus splits into smaller nuclei
- B) Light nuclei combine to form a heavier nucleus ✅
- C) Electrons are captured by the nucleus
- D) A single proton decays
9. The photoelectric effect, in which electrons are emitted from a metal surface by light of sufficient frequency, was explained by Einstein using the concept of:
- A) Wave-only nature of light
- B) Quantised light energy (photons) ✅
- C) Sound resonance
- D) Magnetic induction
Why This Split Matches the Real Paper
These three chapters reward depth more than breadth — a candidate who's solid in Waves, Electromagnetism & Electronics, and Modern Physics is well-positioned even without exhaustive coverage of every minor Physics topic on the FSc syllabus.
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