POST UTME SKYLINE UNIVERSITY 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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 subject to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 2
A 5 kg block 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. Assuming the block undergoes simple harmonic motion, 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 3
A 100 W light bulb is connected to a 220 V power source. If the bulb is used for 5 hours a day, what is the total energy consumed by the bulb in a month?
A. 100 kWh
B. 200 kWh
C. 300 kWh
D. 400 kWh
Question 4
A heat engine operates between two temperatures of 300 K and 600 K. Calculate the efficiency of the engine.
A. 0.2
B. 0.4
C. 0.6
D. 0.8
Question 5
A particle of mass 0.1 kg is moving in a circular path of radius 0.5 m with a speed of 2 m/s. Calculate the centripetal force acting on the particle.
A. 0.2 N
B. 0.4 N
C. 0.6 N
D. 0.8 N
Question 6
A heat engine operates between a high-temperature reservoir at 500°C and a low-temperature reservoir at 100°C. The engine produces 500 J of work per cycle. Calculate the efficiency of the engine.
A. 0.25
B. 0.30
C. 0.35
D. 0.40
Question 7
A light ray passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 8
A current of 2 A flows through a resistor of 10 Ω. Calculate the power dissipated in the resistor.
A. 20 W
B. 40 W
C. 60 W
D. 80 W
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 experiences a centripetal acceleration of 2 m/s^2, what is the magnitude of the net force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 10
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 0.2 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, calculate the maximum speed of the block as it passes through the equilibrium position.
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 11
A 5 kg block is moving at a speed of 2 m/s on a frictionless surface. A force of 10 N is applied to the block for 2 s. What is the final speed of the block?
A. 3 m/s
B. 4 m/s
C. 5 m/s
D. 6 m/s
Question 12
A block of mass 5 kg is moving in a horizontal direction with a velocity of 10 m/s. If a force of 20 N is applied to the block in the same direction, 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 13
A force of 10 N is applied to a spring with a force cons\tant of 50 N/m. Calculate the displacement of the spring.
A. 0.2 m
B. 0.4 m
C. 0.6 m
D. 0.8 m
Question 14
A light source is placed 2 m away from a convex lens of focal length 1 m. If the light source is moved 1 m closer to the lens, what is the new image dis\tance?
A. 1 m
B. 2 m
C. 3 m
D. 4 m
Question 15
A point charge of +2 μC is placed at the origin. A second point charge of -3 μC is placed 0.5 m away from the first charge. What is the magnitude of the electric field at a point 0.2 m away from the second charge?
A. 100 N/C
B. 200 N/C
C. 300 N/C
D. 400 N/C

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