POST UTME COVENANT UNIVERSITY 2022 Physics | Objective

Are you preparing for POST UTME COVENANT UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2022 Physics (Objective) questions designed to simulate the real exam environment.

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 subjected to a centripetal acceleration of 2 m/s², what is the magnitude of the force acting on the particle?
A. 10 N
Correct B. 12 N
C. 15 N
D. 18 N

Correct Answer: B

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Question 2
A light ray is incident on a glass slab at an angle of 30° to the normal. If the re\fractive index of the glass is 1.5, what is the angle of re\fraction?
A. 20°
Correct B. 25°
C. 30°
D. 35°

Correct Answer: B

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Question 3
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
Correct C. 80 Ω
D. 90 Ω

Correct Answer: C

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Question 4
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?
Correct A. 0.05 m
B. 0.1 m
C. 0.15 m
D. 0.2 m

Correct Answer: A

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Question 5
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
Correct B. 10 V
C. 15 V
D. 20 V

Correct Answer: B

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Question 6
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.
Correct B. The pressure increases linearly.
C. The pressure remains cons\tant.
D. The pressure decreases exponentially.

Correct Answer: B

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Question 7
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
Correct B. 400 μC
C. 600 μC
D. 800 μC

Correct Answer: B

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Question 8
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm in front of it. What is the nature of the image formed?
Correct A. Real and inverted
B. Virtual and erect
C. Real and erect
D. Virtual and inverted

Correct Answer: A

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Question 9
A thermodynamic system undergoes a process from an initial state (P1, V1) to a final state (P2, V2). If the work done by the system is 100 J and the heat absorbed by the system is 200 J, what is the change in internal energy of the system?
A. -100 J
Correct B. 0 J
C. 100 J
D. 200 J

Correct Answer: B

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Question 10
A \sinusoidal voltage source has a peak value of 100 V and a frequency of 50 Hz. What is the rms value of the voltage?
A. 50 V
Correct B. 70.7 V
C. 100 V
D. 141.4 V

Correct Answer: B

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Question 11
A 2.5 V battery is connected in series with a 5 Ω resistor and a 10 Ω resistor. What is the current flowing through the circuit?
A. 0.5 A
B. 1.0 A
Correct C. 1.25 A
D. 2.5 A

Correct Answer: C

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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. What is the magnitude of the force acting on the particle?
A. 10 N
B. 12 N
Correct C. 15 N
D. 20 N

Correct Answer: C

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Question 13
A gas occupies a volume of 2 L at a pressure of 1 atm. What is the new volume if the pressure is increased to 2 atm?
A. 1 L
B. 2 L
Correct C. 4 L
D. 8 L

Correct Answer: C

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Question 14
A ray of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
Correct B. 30°
C. 40°
D. 50°

Correct Answer: B

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Question 15
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
Correct C. 20 m
D. 25 m

Correct Answer: C

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Question 16
A 2.0 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 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. 0.2 m/s
B. 0.4 m/s
Correct C. 0.6 m/s
D. 0.8 m/s

Correct Answer: C

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Question 17
A ray of light passes from air into a glass slab with a re\fractive index of 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
Correct B. 25°
C. 30°
D. 35°

Correct Answer: B

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Question 18
A 100 W light bulb is connected to a 220 V power source. Calculate the current flowing through the bulb.
A. 0.4 A
Correct B. 0.5 A
C. 0.6 A
D. 0.7 A

Correct Answer: B

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Question 19
A car travels from rest to a speed of 25 m/s in 10 s. What is the acceleration of the car?
A. 2.5 m/s^2
Correct B. 5.0 m/s^2
C. 7.5 m/s^2
D. 10.0 m/s^2

Correct Answer: B

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Question 20
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
Correct B. 200 m/s
C. 300 m/s
D. 400 m/s

Correct Answer: B

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Question 21
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. 2 m/s^2
B. 4 m/s^2
Correct C. 6 m/s^2
D. 8 m/s^2

Correct Answer: C

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Question 22
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
Correct C. 55 μC
D. 60 μC

Correct Answer: C

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Question 23
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
Correct B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2

Correct Answer: B

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Question 24
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
Correct C. 1000 kWh
D. 1200 kWh

Correct Answer: C

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Question 25
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
Correct C. 9 m/s^2
D. 12 m/s^2

Correct Answer: C

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