New 2026 JAMB Cbt Physics Questions and Answers

1. What is the force on a segment of wire that is 0.5m long and has a current of 2A, when placed in a magnetic field of 2T at and angle of 300300 to the field?

(a) 1.ON

(b) 2.0N

(c) 0.1N

(d) 0.2N

The correct answer is: (a) 1.ON

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

(a) Conduction

(b) Evaporation

(c) Convection

(d) Radiation

The correct answer is: (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 frequency of the applied voltage is less than the natural angular frequency of the circuit

(d) When the angular frequency of the applied voltage is zero

The correct answer is: (a) When the angular frequency of the applied voltage is equal to the natural angular frequency of the circuit

4. A solid weighs 10.5N in air and 5.5N when immersed in a liquid of density 900kgm−3900kgm−3. Calculate the volume of the solid. g=10m/s2g=10m/s2

(a) 1.17×10−4m31.17×10−4m3

(b) 5.56×10−4m35.56×10−4m3

(c) 3.24×10−4m33.24×10−4m3

(d) 2.24×10−4m32.24×10−4m3

The correct answer is: (b) 5.56×10−4m35.56×10−4m3

5. A uniform metre rule AB balanced on a knife edge 60cm from end B when a load of 33g is kept 10cm away from the end A, what is the weight of the metre rule?

(a) 40g

(b) 55g

(c) 66g

(d) 37g

The correct answer is: (c) 66g

6. A paricle in a simple harmonic motion while passing through mean 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

The correct answer is: (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

The correct answer is: (b) Surface tension

8. (i) It converts electrical energy into mechanical energy (ii)It generates electricity (iii)It is based on the principle of electomagnetic induction (iv)It follows Fleming’s left hand rule. Which of the statements above is/are true for an electric motor?

(a) (i) only

(b) (i) and (ii) only

(c) (i), (ii) and (iii) only

(d) (i) and (iv) only

The correct answer is: (d) (i) and (iv) only

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

(a) Anomalous expansion of water

(b) Uneven expansion of the glass tumbler

(c) Thermal expansion of water

(d) Even expansion of the glass tumbler

The correct answer is: (b) Uneven expansion of the glass tumbler

10. which of the following is the function of a p.n junction diode of a 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

The correct answer is: (a) It can be used to convert Alternating Current (AC) to direct current (DC)