POST UTME CHRISTOPHER UNIVERSITY 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A ray of light passes through a prism with an angle of incidence of 30° and an angle of re\fraction of 20°. If the angle of the prism is 60°, calculate the angle of emergence.
A. 40°
B. 50°
C. 60°
D. 70°
Question 2
A uniform magnetic field of strength 2.0 T is applied to a current-carrying wire. If the current in the wire is 5.0 A, what is the magnitude of the magnetic force per unit length on the wire?
A. 0.25 N/m
B. 0.50 N/m
C. 1.00 N/m
D. 2.00 N/m
Question 3
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. If air resis\tance is neglected, calculate the time of flight.
A. 2.0 s
B. 4.0 s
C. 6.0 s
D. 8.0 s
Question 4
A 2.0 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. If the block is displaced by 0.20 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 0.50 m/s
B. 1.00 m/s
C. 1.50 m/s
D. 2.00 m/s
Question 5
A 2.0 mH inductor is connected in series with a 10 V battery and a 5.0 Ω resistor. The switch is closed at t = 0 s. Assuming the inductor has an initial current of 0 A, calculate the current at t = 10 ms.
A. 0.2 A
B. 0.5 A
C. 1.0 A
D. 1.5 A
Question 6
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 12 V. If the plates are separated by a dis\tance of 2.0 mm, what is the surface charge density on the plates?
A. 1.00 x 10^\( -4 \) C/m^2
B. 1.00 x 10^\( -3 \) C/m^2
C. 1.00 x 10^\( -2 \) C/m^2
D. 1.00 x 10^\( -1 \) C/m^2
Question 7
A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. If a 12 V battery is connected across the circuit, calculate the current in the circuit.
A. 0.2 A
B. 0.5 A
C. 1.0 A
D. 1.5 A
Question 8
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 0.2 m from its equilibrium position and released from rest, calculate the maximum speed of the particle.
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 9
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. If the circuit is closed at time t = 0, what is the current in the circuit at time t = 2.0 s?
A. 0.50 A
B. 1.00 A
C. 1.50 A
D. 2.00 A
Question 10
A sound wave has a frequency of 200 Hz and a wavelength of 0.50 m. If the wave is traveling through a medium with a speed of 343 m/s, what is the amplitude of the wave?
A. 0.10 m
B. 0.20 m
C. 0.30 m
D. 0.40 m

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