POST UTME UNIBEN 2019 Physics | Objective

Are you preparing for POST UTME UNIBEN exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2019 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 with a cons\tant speed of 4 m/s. If the radius of the circular path is 3 m, calculate the magnitude of the centripetal acceleration.
A. 12 m/s^2
Correct B. 16 m/s^2
C. 20 m/s^2
D. 24 m/s^2

Correct Answer: B

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Question 2
A 240 V, 10 A current is supplied to a circuit containing a 4 Ω resistor and a 6 Ω resistor in parallel. Calculate the total current drawn from the supply.
A. 14 A
Correct B. 16 A
C. 18 A
D. 20 A

Correct Answer: B

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Question 3
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, calculate the acceleration produced.
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
Correct D. 8 m/s^2

Correct Answer: D

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Question 4
A 100 W, 200 Ω resistor is connected to a 240 V supply. Calculate the current drawn from the supply.
A. 1 A
B. 1.2 A
C. 1.5 A
Correct D. 2 A

Correct Answer: D

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Question 5
A particle of mass 3 kg is moving in a circular path with a cons\tant speed of 8 m/s. If the radius of the circular path is 2 m, calculate the magnitude of the centripetal acceleration.
A. 8 m/s^2
Correct B. 12 m/s^2
C. 16 m/s^2
D. 20 m/s^2

Correct Answer: B

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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. 10 m/s^2
Correct B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2

Correct Answer: B

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Question 7
A light ray passes from air into a glass slab of re\fractive index 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 8
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. 1.5 A
Correct B. 2 A
C. 2.5 A
D. 3 A

Correct Answer: B

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Question 9
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
Correct B. 200 m/s
C. 300 m/s
D. 400 m/s

Correct Answer: B

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Question 10
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the maximum height reached by the projectile?
A. 5 m
Correct B. 10 m
C. 15 m
D. 20 m

Correct Answer: B

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Question 11
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, what is the magnitude of the force?
A. 10 N
Correct B. 12 N
C. 15 N
D. 20 N

Correct Answer: B

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Question 12
A 100 W light bulb is connected to a 220 V power source. What is 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 13
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm away. What is the magnification of the image?
Correct A. 0.5
B. 1.0
C. 1.5
D. 2.0

Correct Answer: A

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Question 14
A 5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 2 m from its equilibrium position and released from rest. What is the maximum speed of the block?
A. 2 m/s
Correct B. 4 m/s
C. 6 m/s
D. 8 m/s

Correct Answer: B

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Question 15
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 12 V. What is the energy stored in the capacitor?
A. 0.6 J
B. 0.8 J
Correct C. 1.0 J
D. 1.2 J

Correct Answer: C

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Question 16
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
Correct B. 12 N
C. 15 N
D. 20 N

Correct Answer: B

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Question 17
A wave has a frequency of 50 Hz and a wavelength of 0.2 m. What is the speed of the wave?
A. 10 m/s
B. 20 m/s
Correct C. 30 m/s
D. 40 m/s

Correct Answer: C

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Question 18
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. 25°
C. 30°
D. 35°

Correct Answer: B

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Question 19
A circuit consists of a 5 Ω resistor and a 10 Ω resistor connected in series. If a voltage of 20 V is applied across the circuit, what is the current flowing through the circuit?
A. 2 A
B. 3 A
Correct C. 4 A
D. 5 A

Correct Answer: C

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Question 20
A magnet is placed near a coil of wire. If the coil has a resis\tance of 10 Ω and an induc\tance of 5 H, what is the current flowing through the coil?
A. 2 A
B. 3 A
Correct C. 4 A
D. 5 A

Correct Answer: C

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Question 21
A uniform magnetic field of 2 T is applied to a coil of wire with 100 turns. If the coil is rotated by 90 degrees in 0.1 seconds, what is the induced emf in the coil?
A. 0.5 V
Correct B. 1 V
C. 2 V
D. 5 V

Correct Answer: B

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Question 22
A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If the particle is subject to a centripetal force of 10 N, what is its angular velocity?
A. 1 rad/s
B. 2 rad/s
Correct C. 3 rad/s
D. 4 rad/s

Correct Answer: C

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Question 23
A heat engine operates between two temperatures of 500 K and 300 K. If the engine has an efficiency of 30%, what is its coefficient of performance?
Correct A. 0.5
B. 1
C. 2
D. 3

Correct Answer: A

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Question 24
A circuit consists of a 10 Ω resistor, a 20 Ω resistor, and a 5 Ω inductor in series. If a voltage of 12 V is applied across the circuit, what is the current through the inductor?
A. 0.5 A
B. 1 A
Correct C. 2 A
D. 3 A

Correct Answer: C

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Question 25
A ray of light passes through a prism with an angle of incidence of 30° and an angle of re\fraction of 20°. What is the angle of deviation?
A. 10°
Correct B. 20°
C. 30°
D. 40°

Correct Answer: B

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