Introduction
Physics is one of the most important subjects in science-related exams like Post-UTME and GCE. However, many students struggle because of the calculations and precision-based questions. This guide provides likely Physics questions with detailed answers to help you practice effectively.
The questions below cover key topics such as measurement, motion, energy, and mechanics. By working through them, you will sharpen both your speed and accuracy.
Practice Questions and Answers
Question 1 – Measurement Precision
Which of the following represents the correct precision for the length of a piece of wire measured with a meter rule?
A. 35 mm
B. 35.0 mm
C. 35.00 mm
D. 35.1 mm
Answer: B. 35.0 mm
A meter rule measures to the nearest millimeter (0.1 cm). Therefore, results must always be recorded to one decimal place. 35.0 mm shows the correct degree of accuracy.
Question 2 – Power and Force
To keep a vehicle moving at a constant speed vvv requires power PPP from the engine. The force provided by the engine is:
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Question 3 – Velocity-Time Graph
The area under a velocity-time graph represents:
A. Acceleration
B. Force
C. Displacement
D. Momentum
Answer: C. Displacement
Question 4 – Density
A block of mass 2 kg has a volume of 0.001 m³. What is its density?
A. 1000 kg/m³
B. 1500 kg/m³
C. 2000 kg/m³
D. 2500 kg/m³
Answer: C. 2000 kg/m³
Density = Mass ÷ Volume = 2 ÷ 0.001 = 2000 kg/m³.
Question 5 – Energy Conversion
Which of the following is an example of the conversion of potential energy to kinetic energy?
A. A ball rolling on the ground
B. Water stored behind a dam released to turn turbines
C. A bulb lighting up
D. A stretched rubber band at rest
Answer: B. Water stored behind a dam released to turn turbines
Question 6 – Motion
A body accelerates uniformly from rest at 2 m/s² for 5 seconds. What is its final velocity?
A. 2.5 m/s
B. 5 m/s
C. 10 m/s
D. 15 m/s
Answer: C. 10 m/s
Final velocity = u + at = 0 + (2 × 5) = 10 m/s.
Question 7 – Work Done
How much work is done when a force of 20 N moves an object through a distance of 5 m?
A. 25 J
B. 50 J
C. 100 J
D. 200 J
Answer: C. 100 J
Work = Force × Distance = 20 × 5 = 100 J.
Question 8 – Optics
A concave mirror has a focal length of 10 cm. At what distance from the mirror should an object be placed so that its image is formed at infinity?
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm
Answer: B. 10 cm
When an object is placed at the focal point of a concave mirror, the reflected rays are parallel, and the image is formed at infinity.
Question 9 – Magnetism
The north pole of a magnet is brought near the south pole of another magnet. What happens?
A. They repel each other
B. They attract each other
C. Nothing happens
D. They lose magnetism
Answer: B. They attract each other
Unlike poles of magnets always attract, while like poles repel.
Question 10 – States of Matter
Which of the following processes is not a change of state?
A. Condensation
B. Evaporation
C. Radiation
D. Sublimation
Answer: C. Radiation
Condensation, evaporation, and sublimation are all changes of state. Radiation, however, is a method of heat transfer, not a phase change.
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Conclusion
Physics requires both theory and calculations, and exams often test your ability to apply formulas quickly. However, with steady practice on past and likely questions, you will improve significantly. Moreover, revising daily will help you master recurring topics such as motion, energy, work, and measurement.
In summary, consistent practice and careful study of solved examples will boost your confidence and performance in your Post-UTME or GCE Physics exam.
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Keywords
- Post-UTME Physics likely questions and answers
- GCE Physics past questions with solutions
- Measurement precision Physics questions
- Power, force, and motion Physics practice
- Physics calculations for Post-UTME
