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POST UTME UI 2025 Physics | Objective

Are you preparing for POST UTME UI exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2025 Physics (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1

A 2.5 mH inductor is connected in series with a 3.2 kΩ resistor and a 12 V battery. If the inductor is initially short-circuited, what is the current in the circuit after 5 ms?

A. 0.5 A

Correct B. 1.2 A

C. 2.5 A

D. 5.0 A

Correct Answer: B

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Question 2

A particle of mass 0.5 kg is projected from the origin with an initial velocity of 20 m/s at an angle of 60° to the horizontal. What is the time of flight?

A. 1.0 s

Correct B. 2.0 s

C. 3.0 s

D. 4.0 s

Correct Answer: B

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Question 3

A 10 Ω resistor is connected in parallel with a 20 Ω resistor. What is the equivalent resis\tance?

Correct A. 5.0 Ω

B. 10.0 Ω

C. 15.0 Ω

D. 20.0 Ω

Correct Answer: A

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Question 4

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 kinetic energy of the block?

A. 10 J

Correct B. 20 J

C. 30 J

D. 40 J

Correct Answer: B

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Question 5

A 100 W light bulb is connected to a 220 V power source. What is the current in the bulb?

A. 0.5 A

Correct B. 1.0 A

C. 1.5 A

D. 2.0 A

Correct Answer: B

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Question 6

A radioactive sample emits \alpha particles with a half-life of 5 days. If the initial activity is 100 Bq, calculate the activity after 15 days.

Correct A. 12.5 Bq

B. 25 Bq

C. 50 Bq

D. 100 Bq

Correct Answer: A

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Question 7

A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If the particle has a speed of 4 m/s, calculate the centripetal force acting on it.

A. 10 N

B. 20 N

Correct C. 30 N

D. 40 N

Correct Answer: C

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Question 8

A gas is enclosed in a container with a volume of 2 L. If the pressure is 3 atm and the temperature is 300 K, calculate the number of moles of gas present.

A. 0.1 mol

Correct B. 0.2 mol

C. 0.3 mol

D. 0.4 mol

Correct Answer: B

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Question 9

A vector has a magnitude of 5 m and makes an angle of 30° with the positive x-axis. Calculate the x and y components of the vector.

Correct A. x-component: 4 m, y-component: 2.5 m

B. x-component: 3 m, y-component: 4 m

C. x-component: 2 m, y-component: 4 m

D. x-component: 1 m, y-component: 5 m

Correct Answer: A

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Question 10

A block of mass 10 kg is placed on a frictionless surface. If a force of 20 N is applied to the block, calculate the acceleration of the block.

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 11

A 10 Ω resistor is connected in series with a 20 Ω resistor and a 5 V battery. What is the current flowing through the 10 Ω resistor?

Correct A. 0.25 A

B. 0.5 A

C. 1 A

D. 2 A

Correct Answer: A

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Question 12

A gas occupies a volume of 2.5 L at a pressure of 1.5 atm. What is the pressure of the gas if its volume is reduced to 1.2 L?

A. 2 atm

Correct B. 3 atm

C. 4 atm

D. 5 atm

Correct Answer: B

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Question 13

A particle moves in a circular path with a cons\tant speed of 5 m/s. What is the magnitude of its acceleration?

A. 0 m/s^2

B. 5 m/s^2

Correct C. 10 m/s^2

D. 20 m/s^2

Correct Answer: C

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Question 14

A magnetic field of 0.5 T is applied to a current-carrying wire. What is the force experienced by the wire if its length is 2 m and its current is 5 A?

A. 0.1 N

B. 0.5 N

Correct C. 1 N

D. 2 N

Correct Answer: C

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Question 15

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. 10 m

Correct B. 15 m

C. 20 m

D. 25 m

Correct Answer: B

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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 acceleration of 2 m/s^2, what is the magnitude of the force acting on the particle?

A. 10 N

B. 12 N

Correct C. 16 N

D. 20 N

Correct Answer: C

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Question 17

A wave of wavelength 5 m and frequency 2 Hz is traveling through a medium with a speed of 10 m/s. What is the amplitude of the wave?

A. 0.5 m

Correct B. 1 m

C. 1.5 m

D. 2 m

Correct Answer: B

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Question 18

A particle of mass 1 kg is moving in a straight line with an initial velocity of 5 m/s. If the particle is subjected to a force of 2 N, what is the acceleration of the particle?

A. 1 m/s^2

Correct B. 2 m/s^2

C. 3 m/s^2

D. 4 m/s^2

Correct Answer: B

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Question 19

A simple harmonic motion has a maximum displacement of 2 m and a period of 4 s. What is the angular frequency of the motion?

Correct A. \frac{\pi}{2} rad/s

B. \frac{\pi}{4} rad/s

C. \frac{\pi}{6} rad/s

D. \frac{\pi}{8} rad/s

Correct Answer: A

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Question 20

A wave of wavelength 10 m and frequency 1 Hz is traveling through a medium with a speed of 20 m/s. What is the amplitude of the wave?

A. 0.5 m

Correct B. 1 m

C. 1.5 m

D. 2 m

Correct Answer: B

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Question 21

A 1000 Hz AC voltage source is connected to a 50 Ω resistor. If the maximum voltage is 100 V, what is the rms value of the current flowing through the resistor?

Correct A. 0.707 A

B. 1 A

C. 1.414 A

D. 2 A

Correct Answer: A

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Question 22

A body 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 body?

A. 10 N

B. 20 N

Correct C. 30 N

D. 40 N

Correct Answer: C

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Question 23

A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. What is the equivalent resis\tance of the circuit?

A. 30 Ω

B. 40 Ω

Correct C. 50 Ω

D. 60 Ω

Correct Answer: C

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Question 24

A 100 W bulb is connected to a 220 V AC power source. What is the current drawn by the bulb?

A. 0.45 A

Correct B. 0.5 A

C. 0.55 A

D. 0.6 A

Correct Answer: B

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Question 25

A body of mass 5 kg is moving in a circular path of radius 2 m with a cons\tant speed of 6 m/s. What is the magnitude of the force acting on the body?

A. 20 N

B. 30 N

Correct C. 40 N

D. 50 N

Correct Answer: C

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