POST UTME AFE BABALOLA UNIVERSITY 2019 Physics | Objective

Are you preparing for POST UTME AFE BABALOLA UNIVERSITY 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 of radius 3 m with a cons\tant speed of 4 m/s. What is the magnitude of the centripetal acceleration?
A. 4 m/s^2
B. 6 m/s^2
Correct C. \frac{16}{3} m/s^2
D. 8 m/s^2

Correct Answer: C

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Question 2
A capacitor of capaci\tance 10 μF is connected across a 20 V battery. What is the charge stored in the capacitor?
Correct A. 2 \times 10^{-4} C
B. 4 \times 10^{-4} C
C. 6 \times 10^{-4} C
D. 8 \times 10^{-4} C

Correct Answer: A

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Question 3
A body of mass 5 kg is moving with a velocity of 10 m/s. What is its kinetic energy?
A. 125 J
Correct B. 250 J
C. 375 J
D. 500 J

Correct Answer: B

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Question 4
A circuit consists of a 10 Ω resistor and a 20 Ω resistor connected in series. What is the equivalent resis\tance?
A. 10 Ω
B. 20 Ω
Correct C. 30 Ω
D. 40 Ω

Correct Answer: C

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Question 5
A projectile is launched at an angle of 30° to the horizontal with an initial velocity of 20 m/s. What is the maximum height reached by the projectile?
A. 8 m
B. 10 m
Correct C. 10.4 m
D. 12 m

Correct Answer: C

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Question 6
A 5 Ω resistor is connected in series with a 10 Ω resistor and a 15 Ω resistor. If a potential difference of 20 V is applied across the circuit, what is the current flowing through the 5 Ω resistor?
A. 1.33 A
Correct B. 2 A
C. 2.5 A
D. 3 A

Correct Answer: B

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Question 7
A gas at a pressure of 2 atm and a temperature of 300 K is allowed to expand to a volume of 10 L. If the final temperature is 400 K, what is the final pressure of the gas?
A. 1.2 atm
Correct B. 1.5 atm
C. 2 atm
D. 2.5 atm

Correct Answer: B

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Question 8
A particle of mass 2 kg is moving in a circular path with a radius of 5 m. If the particle has a speed of 10 m/s, what is the centripetal force acting on the particle?
A. 20 N
B. 50 N
Correct C. 100 N
D. 200 N

Correct Answer: C

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Question 9
A heat engine operates between a temperature of 500 K and a temperature of 300 K. If the engine has an efficiency of 30%, what is the temperature of the hot reservoir?
A. 400 K
B. 500 K
Correct C. 600 K
D. 700 K

Correct Answer: C

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Question 10
A projectile is launched at an angle of 60° to the horizontal with an initial velocity of 20 m/s. If the projectile lands 10 m away from the point of launch, what is the initial velocity of the projectile?
A. 10 m/s
B. 15 m/s
Correct C. 20 m/s
D. 25 m/s

Correct Answer: C

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Question 11
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. The particle is displaced by 0.5 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the angular frequency of the particle's motion.
A. 5 rad/s
B. 10 rad/s
Correct C. 20 rad/s
D. 50 rad/s

Correct Answer: C

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Question 12
A ray of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.
A. 20°
Correct B. 30°
C. 40°
D. 50°

Correct Answer: B

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Question 13
A circuit consists of a 12 V battery, a 4 Ω resistor, and an inductor of induc\tance 0.1 H. If the current in the circuit is 2 A, calculate the voltage drop across the inductor.
A. 0.2 V
B. 0.4 V
Correct C. 0.6 V
D. 0.8 V

Correct Answer: C

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Question 14
A radioactive sample decays with a half-life of 10 years. If the initial activity is 1000 Bq, calculate the activity after 20 years.
A. 125 Bq
B. 250 Bq
Correct C. 500 Bq
D. 1000 Bq

Correct Answer: C

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Question 15
A beam of light passes through a double-slit apparatus and forms an interference pattern on a screen. If the wavelength of the light is 500 nm and the dis\tance between the slits is 0.5 mm, calculate the dis\tance between the central maximum and the first minimum.
A. 1.25 mm
Correct B. 2.5 mm
C. 5 mm
D. 10 mm

Correct Answer: B

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