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JAMB CBT PHYSICS

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JAMB PHYSICS QUESTIONS
September 1, 2025

PHYSICS JAMB QUESTIONS

Practice quick questions by answering 25 questions

About JAMB Physics CBT Practice on ExamHub

This free JAMB Physics CBT practice test is designed to help UTME candidates understand key Physics concepts tested in the Unified Tertiary Matriculation Examination. The questions are structured to reflect real JAMB CBT standards.

Candidates are advised to attempt all questions independently before viewing the correct answers and explanations. Regular practice improves speed, accuracy, and confidence during the actual JAMB examination.

ExamHub CBT is an independent educational platform and is not affiliated with JAMB. All materials are provided strictly for learning and examination practice purposes.

1. What is the forces on segment of wire that is 0.5m long, and has a current of 2A, when placed in a magnetic field of 2T at an angle of 30o to the field

A. 1.0N
B. 2.0N
C. 0.1N
D. 0.2N

2. The mode of heat transfer that is electromagnetic in nature,

A. Conduction
B. Evaporation
C. Convection
D. Radiation

3. The condition for resonance to occur in RLC series circuit is

A. When the angular frequency of the applied voltage is equal to the natural angular frequency of the circuit
B. When the angular frequency of the apply voltage is greater than the natural angular frequency of the circuit
C. When the angular of the apply voltage is less than the natural angular frequency of the circuit.
D. When the angular frequency of the applied voltage is zero.

4. A solid weighs 10.5N in air and 5.5N when immersed in a liquid of density 900kgm-3.sCalculate the volume of the solid.[g=10m/s2].

A. 1.17×10-4m3
B. 5.56×10-4m3
C. 3.24×10-4m3
D. 2.24×10-4m3

5. A uniform metre rule AB balanced on a knife edge 60cm from end B when a load of 22g is kept 10cm away from the end A, what is the weight of the meter rule

A. 40g
B. 55g
C. 66g
D. 37g

6. A particle in simple harmonic motion while passing through means position will have

A. Minimum kinetic energy and maximum potential energy
B. Maximum potential energy and minimum kinetic energy
C. Minimum kinetic energy and minimum potential energy
D. Maximum kinetic energy and minimum kinetic energy

7. A pin floats on water due to the phenomenon of

A. Viscosity in fluid
B. Surface tension
C. Capillary tension
D. Gravitation

8. I. it convert electrical energy into a mechanical energy II. It generate electricity III. It is based on the principle of electromagnetic induction IV. Its follows Eleming,s left hand rule Which of the statements above is or are true for electric motor

A. I only
B. I and II only
C. I, II, and III only
D. I and IV only

9. A thick glass tumbler cracks when hot water is poured into it because

A. Anomalous expansions of water
B. Uneven expansion of the glass tumbler
C. Thermal expansion of water
D. Even expansion of the glass tumbler

10. Which of the following is the function of p.n. junction diode of s semiconductor device

A. it can be used to convert alternating current AC to direct current DC
B. it can be used to convert direct current DC to Alternating current
C. it can be used to amplify the electric current in a circuit
D. it can be used to step down the electric current in a circuit

11. Which of the following is true of a particle in stable equilibrium

A. Potential energy is constant
B. Potential energy is maximum
C. Potentials energy is minimum
D. Potential energy is zero

12. Determine the equivalent capacitance of the capacitor shown in the circuit.



A. 1.20uF
B. 6.00uF
C. 0.55uF
D. 1.33uF

13. The power factor of series R.L.C. circuit at resonance is

A. 0
B. 1
C. π
D. π/2

14. One of these is not a mechanical wave

A. Sound wave
B. Water wave
C. Light wave
D. Seismic wave

15. Which of the following is a scalar quantity

A. Electric potential
B. Electric field
C. Angular momentum
D. Linear momentum
16. Given three capacitor each of capacitance C. the resultant capacitance of 2C/3 Can be obtained by A. Combining all in parallel
B. All in series
C. Two of them in series and in parallel with the third
D. Two in parallel and third in series with this combination

17. If two plane mirror are positioned side by side, the number of image formed is 8. At what angled are they positioned

A. 30o
B. 40o
C. 60o
D. 90o

18. If the half life of a particle is 4.5 days. How long will it decay ¾ of its original mass

A. 9 days
B. 12 days
C. 15 days
D. 21 days

19. A transformer core is laminated to reduced

A. Hysteresis
B. Copper loss
C. Eddy current loss
D. Stray and di electric losses

20. A glass rod is charged when rubbed with silk cloth because

A. Its transferred negative charge
B. Its transfer positive charges
C. Its accepts negative charges
D. Decrees the number of free electrons

21. Addition of trivalent impurity to semiconductor

A. Increase the number of hole
B. Decrease the number of holes
C. Increase the number of free electrons
D. Decrease the number of free electrons

22. A charge of magnitude 1.6×10–19 C is placed in a uniformed electric field of intensity 1,200v/m. calculate its acceleration if the mass the mass of the charge is 9.1×10-31kg

A. 2.11×1012ms2
B. 2.11×1014ms2
C. 6.83×1012ms2
D. 6.83×1014ms2

23. The defeat of the eye lens which occurs when the ciliary muscles are weak is called

A. Long sightedness
B. Short sightedness
C. Presbyopia
D. Astigmatism

24. A light of 6.22eV is incident on a cadmium surface. If a stopping voltage of 2.1eV is required to reduced the photocurrent to zero. Calculate the work function of the cadium

A. 4.07eV
B. 2.15ev
C. 6.22ev
D. 8.37ev

25. Mercury is used as a thermometric susbtance because I. its specific heat is low II. does not wet glass III. it is opaque

A. I only
B. I and II only
C. II and III only
D. I, II and III
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