POST UTME OAU 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 5 kg block is attached to a horizontal spring with a spring cons\tant of 100 N/m. If the block is displaced by 2 m from its equilibrium position and released from rest, calculate the maximum speed of the block.
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 2
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 60° above the horizontal. If the acceleration due to gravity is 9.8 m/s^2, calculate the maximum height reached by the projectile.
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 3
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, calculate the time it takes for the particle to complete one full revolution.
A. 2 seconds
B. 4 seconds
C. 6 seconds
D. 8 seconds
Question 4
A wave of frequency ( f ) and wavelength ( lambda ) is traveling through a medium. Find the speed ( v ) of the wave.
A. v = f\lambda
B. v = \frac{f}{\lambda}
C. v = \frac{\lambda}{f}
D. v = f\frac{\lambda}{2}
Question 5
A 100 W light bulb is connected to a 220 V power source. If the resis\tance of the light bulb is 50 Ω, calculate the current flowing through the light bulb.
A. 2 A
B. 4 A
C. 6 A
D. 8 A
Question 6
A uniform magnetic field of magnitude 2.0 T is directed along the z-axis. A current of 5.0 A flows in a circular loop of radius 0.20 m, placed in the x-y plane. What is the magnitude of the magnetic moment of the loop?
A. 0.20 A m^2
B. 0.40 A m^2
C. 0.60 A m^2
D. 0.80 A m^2
Question 7
A wave of frequency 100 Hz and amplitude 2 m is traveling through a medium with a speed of 300 m/s. What is the wavelength of the wave?
A. 3 m
B. 4 m
C. 5 m
D. 6 m
Question 8
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 12 V. If the dis\tance between the plates is doubled, what is the new capaci\tance?
A. 5 μF
B. 10 μF
C. 20 μF
D. 40 μF
Question 9
A particle of mass 2 kg is moving in a circular path with a cons\tant speed of 4 m/s. If the radius of the path is 3 m, calculate the magnitude of the force acting on the particle.
A. 12 N
B. 16 N
C. 20 N
D. 24 N
Question 10
A 50 Hz AC circuit has a resis\tance of 10 ohms and an inductive reac\tance of 20 ohms. What is the impedance of the circuit?
A. 22 ohms
B. 24 ohms
C. 26 ohms
D. 28 ohms
Question 11
A heat engine operates between a high-temperature reservoir at 500 K and a low-temperature reservoir at 300 K. What is the maximum efficiency of the engine?
A. 0.25
B. 0.33
C. 0.40
D. 0.50
Question 12
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. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 13
A magnetic field of 0.5 T is applied to a current-carrying wire of length 2 m. If the current is 5 A, what is the force on the wire?
A. 0.5 N
B. 1 N
C. 2 N
D. 5 N
Question 14
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 force of 12 N, what is the magnitude of the force?
A. 10 N
B. 12 N
C. 15 N
D. 20 N
Question 15
A wave has a frequency of 50 Hz and a wavelength of 10 m. Calculate the speed of the wave.
A. 500 m/s
B. 1000 m/s
C. 1500 m/s
D. 2000 m/s

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