POST UTME AL-HIKMAH UNIVERSITY 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A capacitor consists of two parallel plates, each of area 0.04 m^2, separated by a dis\tance of 0.02 m. If the capaci\tance of the capacitor is 8 x 10^-6 F, what is the charge stored on the capacitor when a potential difference of 12 V is applied across it?
A. 96 x 10^-6 C
B. 192 x 10^-6 C
C. 288 x 10^-6 C
D. 384 x 10^-6 C
Question 2
A gas is enclosed in a container with a movable piston. The gas is heated, cau\sing its pressure to increase. Which of the following laws describes the relationship between the pressure and volume of the gas?
A. Charles' Law
B. Gay-Lussac's Law
C. Boyle's Law
D. Avogadro's Law
Question 3
A lens of focal length 20 cm forms an image of a dis\tant object. What is the magnification of the lens?
A. 1
B. 2
C. 3
D. 4
Question 4
A photon of wavelength 500 nm is incident on a metal surface. If the work function of the metal is 2 eV, what is the maximum kinetic energy of the emitted electron?
A. 1 eV
B. 2 eV
C. 3 eV
D. 4 eV
Question 5
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 acceleration of the particle?
A. 10 m/s^2
B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 6
A wave with a frequency of 50 Hz and a wavelength of 0.1 m is traveling through a medium. If the speed of the wave is 300 m/s, what is the amplitude of the wave?
A. 0.01 m
B. 0.02 m
C. 0.03 m
D. 0.04 m
Question 7
A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. What is the speed of the sound wave?
A. 100 m/s
B. 200 m/s
C. 400 m/s
D. 500 m/s
Question 8
A gas expands from 2 L to 5 L against a cons\tant external pressure of 2 atm. What is the work done by the gas?
A. 10 J
B. 20 J
C. 30 J
D. 40 J
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 force of 12 N, what is the magnitude of the acceleration of the particle?
A. 10 m/s^2
B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 10
A gas occupies a volume of 2 L at a pressure of 1 atm. If the temperature is increased by 20°C, what is the new volume of the gas?
A. 2.5 L
B. 3 L
C. 3.5 L
D. 4 L
Question 11
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
Question 12
A projectile is launched at an angle of 30° with an initial velocity of 20 m/s. If the air resis\tance is negligible, what is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 13
A body of mass 10 kg is moving with a velocity of 5 m/s. What is its kinetic energy?
A. 25 J
B. 50 J
C. 75 J
D. 100 J
Question 14
A simple harmonic motion has a period of 2 s and an amplitude of 3 m. What is the angular frequency of the motion?
A. 1.5 rad/s
B. 2.5 rad/s
C. 3.5 rad/s
D. 4.5 rad/s
Question 15
A block of mass 5 kg is placed on a frictionless surface and attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 2 m from its equilibrium position and released, what is the maximum speed of the block?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s

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