2025 JAMB CBT Physics Expo

Preparing for the 2025 JAMB CBT Physics Expo exam requires a solid understanding of the syllabus and consistent practice. Physics questions in JAMB often test your knowledge of concepts, formulas, and their applications. Below are likely topics, question types, and sample questions with answers to help you prepare effectively.

Key Topics in JAMB Physics

1. Mechanics
   • Motion (speed, velocity, acceleration).
   • Laws of motion (Newton’s laws).
   • Work, energy, and power.
   • Momentum and impulse.
   • Simple machines.
2. Thermodynamics
   • Heat and temperature.
   • Thermal expansion.
   • Gas laws (Boyle’s law, Charles’s law, etc.).
   • Heat transfer (conduction, convection, radiation).
3. Waves and Optics
   • Types of waves (mechanical, electromagnetic).
   • Properties of waves (reflection, refraction, diffraction).
   • Lenses and mirrors (image formation).
   • Sound waves.
4. Electricity and Magnetism
   • Electric circuits (Ohm’s law, resistors, capacitors).
   • Magnetic fields and forces.
   • Electromagnetic induction.
   • Transformers.
5. Modern Physics
   • Atomic structure.
   • Radioactivity.
   • Quantum physics.
6. Measurement and Units
   • Fundamental and derived units.
   • Measurement instruments (vernier calipers, micrometer screw gauge).

Likely Question Types

1. Conceptual Questions
   • Testing your understanding of physics principles.
   • Example: What is the SI unit of force?
     A) Joule
     B) Newton
     C) Watt
     D) Pascal
     Answer: B) Newton
2. Calculation-Based Questions
   • Applying formulas to solve problems.
   • Example: A car accelerates uniformly from rest to a velocity of 20 m/s in 5 seconds. What is its acceleration?
     A) 2 m/s²
     B) 4 m/s²
     C) 5 m/s²
     D) 10 m/s²
     Answer: B) 4 m/s²
3. Graphical Interpretation
   • Analyzing graphs (e.g., velocity-time, distance-time).
   • Example: What does the slope of a velocity-time graph represent?
     A) Distance
     B) Acceleration
     C) Speed
     D) Momentum
     Answer: B) Acceleration
4. Experimental Questions
   • Questions based on physics experiments or setups.
   • Example: In an experiment to determine the focal length of a convex lens, which of the following is NOT required?
     A) Screen
     B) Lens holder
     C) Stopwatch
     D) Object
     Answer: C) Stopwatch

Sample Questions and Answers

1. Mechanics: A force of 10 N acts on a mass of 2 kg. What is the acceleration?
   A) 2 m/s²
   B) 5 m/s²
   C) 10 m/s²
   D) 20 m/s²
   Answer: B) 5 m/s²
   Explanation: a=Fm=102=5 m/s²a=mF​=210​=5m/s².
2. Thermodynamics: Which of the following is NOT a mode of heat transfer?
   A) Conduction
   B) Convection
   C) Radiation
   D) Reflection
   Answer: D) Reflection
3. Waves and Optics: What is the speed of light in a vacuum?
   A) 3×108 m/s3×108m/s
   B) 3×106 m/s3×106m/s
   C) 3×104 m/s3×104m/s
   D) 3×102 m/s3×102m/s
   Answer: A) 3×108 m/s3×108m/s
4. Electricity and Magnetism: A resistor of 5 Ω is connected to a 10 V battery. What is the current flowing through the resistor?
   A) 0.5 A
   B) 2 A
   C) 5 A
   D) 10 A
   Answer: B) 2 A
   Explanation: I=VR=105=2 AI=RV​=510​=2A.
5. Modern Physics: Which of the following particles is found in the nucleus of an atom?
   A) Electron
   B) Proton
   C) Neutron
   D) Both B and C
   Answer: D) Both B and C

Tips for Preparation

1. Study the Syllabus: Cover all topics in the JAMB Physics syllabus.
2. Practice Past Questions: Solve past JAMB Physics questions to understand the exam format.
3. Understand Formulas: Memorize and practice applying key physics formulas.
4. Use CBT Software: Practice with JAMB CBT software to get used to the computer-based testing environment.
5. Focus on Weak Areas: Identify and improve on topics you find challenging.
6. Time Management: Practice solving questions within the allotted time.

By focusing on these areas and practicing regularly, you can improve your chances of performing well in the 2024 JAMB Physics exam. Good luck!