Likely WAEC GCE Physics Questions and Answers 2025/2026
SECTION A: OBJECTIVE QUESTIONS (MCQs)
1. The unit of force in the SI system is:
A. Joule
B. Newton ✅
C. Pascal
D. Watt
Answer: B. Newton
2. The law of conservation of energy states that:
A. Energy can be created and destroyed
B. Energy cannot be transferred
C. Energy cannot be created or destroyed, only transformed ✅
D. Energy is always lost in transformation
Answer: C
3. Which of the following materials is a good conductor of electricity?
A. Rubber
B. Copper ✅
C. Glass
D. Wood
Answer: B
4. The speed of light in vacuum is approximately:
A. 3 × 10⁶ m/s
B. 3 × 10⁸ m/s ✅
C. 3 × 10⁵ m/s
D. 3 × 10⁷ m/s
Answer: B
5. Which instrument is used to measure electric current?
A. Voltmeter
B. Ammeter ✅
C. Galvanometer
D. Ohmmeter
Answer: B
6. A freely falling body accelerates at a rate of:
A. 5 m/s²
B. 9.8 m/s² ✅
C. 10 m/s
D. 1 m/s²
Answer: B
7. The focal length of a convex lens decreases when:
A. Lens is immersed in water ✅
B. Lens is heated
C. Lens is cooled
D. Lens is moved closer to the object
Answer: A
8. Which of the following quantities is a scalar?
A. Force
B. Velocity
C. Speed ✅
D. Acceleration
Answer: C
9. The pressure exerted by a fluid in a container depends on:
A. Density, height, and gravity ✅
B. Volume only
C. Temperature only
D. Mass only
Answer: A
10. The instrument used to measure atmospheric pressure is:
A. Thermometer
B. Barometer ✅
C. Hydrometer
D. Hygrometer
Answer: B
SECTION B: ESSAY QUESTIONS
1. Define Physics and explain its branches
Answer:
Physics is the branch of science that studies matter, energy, and the interactions between them.
Branches:
Mechanics: Motion and forces (e.g., Newton’s laws)
Thermodynamics: Heat and temperature
Optics: Light and its behavior
Electricity and Magnetism: Electric charges, currents, and magnetic fields
Modern Physics: Atomic, nuclear, and quantum physics
2. State and explain Newton’s three laws of motion
First Law (Law of Inertia): A body remains at rest or in uniform motion unless acted upon by an external force.
Second Law: Force equals mass times acceleration (F = ma).
Third Law: For every action, there is an equal and opposite reaction.
3. Explain energy transformation with examples
Answer:
Energy can neither be created nor destroyed, only transformed.
Examples:
Chemical energy in fuel → Thermal energy in engine → Kinetic energy of car
Electrical energy → Light energy in a bulb
Mechanical energy → Sound energy in a piano
4. Refraction of Light
Refraction is the bending of light when it passes from one medium to another.
Laws of Refraction:
Incident ray, refracted ray, and normal lie in the same plane.
The ratio of sine of angle of incidence to sine of angle of refraction is constant (Snell’s Law).
5. Simple Harmonic Motion (SHM)
Definition: Motion in which acceleration is directly proportional to the displacement and opposite in direction.
Examples:
Pendulum
Mass-spring system
Formula: a=−ω2xa = -\omega^2 x
6. Practical Tips for WAEC Physics
Always show step-by-step calculations.
Label all diagrams clearly.
Use standard SI units.
For practical questions, record observations before conclusions.
