POST UTME AL-HIKMAH UNIVERSITY 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A body of mass 5 kg is moving in a circular path of radius 2 m with a cons\tant speed of 4 m/s. Calculate the magnitude of the force acting on the body.
A. 20 N
B. 30 N
C. 40 N
D. 50 N
Question 2
A vector A has a magnitude of 3 units and a direction of 45°. If a vector B has a magnitude of 2 units and a direction of 60°, what is the magnitude of the resul\tant vector A + B?
A. 4.2 units
B. 5.5 units
C. 6.8 units
D. 8.1 units
Question 3
A circuit consists of a 9.0 V battery, a 2.0 Ω resistor, and an inductor of induc\tance 0.50 H. What is the time cons\tant of the circuit?
A. 0.10 s
B. 0.20 s
C. 0.30 s
D. 0.40 s
Question 4
A light wave with a frequency of 5.0 x 10^14 Hz has a wavelength of 500 nm. Calculate the speed of the light wave.
A. 2.5 x 10^8 m/s
B. 5.0 x 10^8 m/s
C. 7.5 x 10^8 m/s
D. 10.0 x 10^8 m/s
Question 5
A heat engine operates between a temperature of 500 K and a temperature of 300 K. If the efficiency of the engine is 30%, what is the work done by the engine?
A. 100 J
B. 200 J
C. 300 J
D. 400 J
Question 6
A 10V battery is connected to a 2Ω resistor. What is the current flowing through the resistor?
A. 5A
B. 2.5A
C. 1A
D. 0.5A
Question 7
A parallel plate capacitor consists of two plates of area 0.1 m², separated by a dis\tance of 0.01 m. The capaci\tance of the capacitor is 10 nF. If a potential difference of 10 V is applied across the plates, calculate the charge stored on the capacitor.
A. 10 μC
B. 20 μC
C. 30 μC
D. 40 μC
Question 8
A particle of mass 2 kg is projected from the origin with an initial velocity of 10 m/s at an angle of 60° to the horizontal. Assuming the acceleration due to gravity is 9.8 m/s², calculate the time taken for the particle to reach its maximum height.
A. 1.5 s
B. 2 s
C. 2.5 s
D. 3 s
Question 9
A 100V, 50Hz AC source is connected to a 10Ω resistor. What is the impedance of the circuit?
A. 10Ω
B. 20Ω
C. 30Ω
D. 40Ω
Question 10
A sound wave with a frequency of 200 Hz and a speed of 340 m/s is traveling through a medium. If the wavelength of the wave is 1.7 m, what is the amplitude of the wave?
A. 0.1 m
B. 0.2 m
C. 0.3 m
D. 0.4 m
Question 11
A gas occupies a volume of 2 L at a pressure of 1 atm and a temperature of 300 K. Calculate the volume of the gas at a pressure of 2 atm and a temperature of 400 K.
A. 4 L
B. 6 L
C. 8 L
D. 10 L
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 force of 12 N, what is the angle between the velocity vector and the radius vector?
A. 45°
B. 60°
C. 30°
D. 90°
Question 13
A beam of light of wavelength 500 nm passes through a double-slit apparatus. The dis\tance between the slits is 0.5 mm. Calculate the dis\tance between the central maximum and the second minimum on a screen 1 m away.
A. 3 mm
B. 4 mm
C. 5 mm
D. 6 mm
Question 14
A particle is moving in a simple harmonic motion with a frequency of 5 Hz and an amplitude of 2 m. Calculate the maximum acceleration of the particle.
A. 10 m/s^2
B. 20 m/s^2
C. 30 m/s^2
D. 40 m/s^2
Question 15
A body is moving in a circular path with a radius of 2 m. If the body has a velocity of 4 m/s, what is the centripetal acceleration of the body?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2

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