POST UTME CRAWFORD UNIVERSITY 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A parallel plate capacitor has plates of area 0.04 m^2, separated by a dis\tance of 0.02 m. The capaci\tance is 2.5 nF. If the potential difference between the plates is increased to 10 V, what is the new charge on the capacitor?
A. 62.5 nC
B. 125 nC
C. 250 nC
D. 500 nC
Question 2
A capacitor consists of two parallel plates separated by a dis\tance of 1 mm. If the capaci\tance of the capacitor is 10 μF, what is the charge stored on the capacitor when a potential difference of 5 V is applied across it?
A. 50 μC
B. 100 μC
C. 150 μC
D. 200 μC
Question 3
A light ray passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 10°
B. 20°
C. 30°
D. 40°
Question 4
A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a uniform magnetic field of strength 2 T, what is the magnitude of the magnetic force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 5
A block of mass 5 kg is attached to a horizontal, massless spring with a force cons\tant of 200 N/m. The block is displaced by 2 m from its equilibrium position and released from rest. What is the maximum speed of the block?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 6
A gas is confined to a container with a movable piston. If the gas is heated, what happens to the pressure of the gas?
A. Increases
B. Decreases
C. Remains cons\tant
D. Dep\ends on the initial pressure
Question 7
A simple harmonic motion has a maximum displacement of 5 m and a period of 2 s. If the motion starts from its equilibrium position, what is the amplitude of the motion?
A. 2.5 m
B. 3 m
C. 4 m
D. 5 m
Question 8
A charged particle moves through a region with a uniform magnetic field. If the particle's velocity is perp\endicular to the magnetic field, what is the direction of the force exerted on the particle?
A. Tangential to the particle's velocity
B. Radial to the particle's velocity
C. Perp\endicular to the particle's velocity
D. Along the magnetic field
Question 9
A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal acceleration of 2 m/s^2, what is the magnitude of the force acting on the particle?
A. 10 N
B. 12 N
C. 16 N
D. 20 N
Question 10
A gas is confined to a cylinder of volume 2 m^3 at a temperature of 300 K. If the temperature is increased to 400 K, what is the new volume of the gas?
A. 2.5 m^3
B. 3 m^3
C. 3.5 m^3
D. 4 m^3
Question 11
A Carnot engine operates between two temperatures of 300 K and 400 K. If the engine absorbs 100 J of heat from the high-temperature reservoir, what is the efficiency of the engine?
A. 0.2
B. 0.3
C. 0.4
D. 0.5
Question 12
A radioactive sample has a half-life of 10 years. If the initial activity of the sample is 1000 Bq, what is the activity of the sample after 20 years?
A. 250 Bq
B. 500 Bq
C. 750 Bq
D. 1000 Bq
Question 13
A simple harmonic motion has a maximum displacement of 2 m and a period of 4 s. What is the angular frequency?
A. 1.57 rad/s
B. 3.14 rad/s
C. 6.28 rad/s
D. 12.56 rad/s
Question 14
A block of mass 5 kg is placed on a frictionless surface and a horizontal force of 20 N is applied to it. What is the acceleration of the block?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 15
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the circuit?
A. 1 A
B. 2 A
C. 3 A
D. 4 A

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