POST UTME COVENANT UNIVERSITY 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 10 μF capacitor is connected in series with a 5 kΩ resistor and a 9 V battery. If the switch is closed at time t = 0, what is the charge on the capacitor after 5 seconds?
A. 45 μC
B. 50 μC
C. 55 μC
D. 60 μC
Question 2
A projectile is launched at an angle of 45° to the horizontal with an initial velocity of 20 m/s. What is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 3
A wave has a frequency of 50 Hz and a wavelength of 2 m. What is the speed of the wave?
A. 100 m/s
B. 200 m/s
C. 300 m/s
D. 400 m/s
Question 4
A gas is enclosed in a container with a moveable piston. The gas is heated at cons\tant volume. What happens to the pressure of the gas?
A. The pressure increases exponentially.
B. The pressure increases linearly.
C. The pressure remains cons\tant.
D. The pressure decreases exponentially.
Question 5
A vector A has a magnitude of 5 units and makes an angle of 30° with the positive x-axis. What is the x-component of vector A?
A. 2.5 units
B. 3.5 units
C. 4.5 units
D. 5.5 units
Question 6
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. 8 m/s^2
B. 12 m/s^2
C. 16 m/s^2
D. 20 m/s^2
Question 7
A 100 V AC supply is connected to a 50 Ω resistor in series with a 20 mH inductor. If the frequency of the supply is 50 Hz, what is the impedance of the circuit?
A. 60 Ω
B. 70 Ω
C. 80 Ω
D. 90 Ω
Question 8
A simple harmonic motion has a period of 2 s and an amplitude of 5 m. If the particle is at its maximum displacement at t = 0 s, what is the equation of motion?
A. x(t) = 5 \cos \( \pi t \)
B. x(t) = 5 \sin \( \pi t \)
C. x(t) = 5 \cos \( 2 \pi t \)
D. x(t) = 5 \sin \( 2 \pi t \)
Question 9
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 20 V is applied across the plates, what is the charge stored on the capacitor?
A. 200 μC
B. 400 μC
C. 600 μC
D. 800 μC
Question 10
A wave has a frequency of 50 Hz and a wavelength of 2 m. If the wave is traveling in the positive x-direction, what is the speed of the wave?
A. 50 m/s
B. 75 m/s
C. 100 m/s
D. 125 m/s
Question 11
A 100 W bulb is connected to a 220 V power supply. If the bulb is used for 5 hours a day, what is the total energy consumed by the bulb in a month?
A. 600 kWh
B. 800 kWh
C. 1000 kWh
D. 1200 kWh
Question 12
A particle of mass 3 kg is moving in a circular path of radius 2 m with a cons\tant speed of 6 m/s. If the particle is subjected to a centripetal force of 18 N, what is the magnitude of the acceleration of the particle?
A. 3 m/s^2
B. 6 m/s^2
C. 9 m/s^2
D. 12 m/s^2
Question 13
A body of mass 5 kg is moving with a velocity of 10 m/s. If it is subjected to a force of 20 N, what is the acceleration of the body?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 14
A magnetic field of 0.5 T is applied to a coil of 100 turns and a radius of 0.1 m. If the coil is rotated at a frequency of 50 Hz, what is the induced emf?
A. 5 V
B. 10 V
C. 15 V
D. 20 V
Question 15
A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. If the speed of sound in air is 340 m/s, what is the amplitude of the wave?
A. 0.05 m
B. 0.1 m
C. 0.15 m
D. 0.2 m

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: