POST UTME OSUSTECH 2025 Physics | Objective

Are you preparing for POST UTME OSUSTECH 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 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
Correct B. 12 m/s^2
C. 16 m/s^2
D. 24 m/s^2

Correct Answer: B

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Question 2
A capacitor of capaci\tance 10 μF is connected in series with a resistor of resis\tance 20 Ω. If a voltage of 100 V is applied across the circuit, what is the current flowing through the circuit?
A. 2 A
B. 3 A
Correct C. 5 A
D. 7 A

Correct Answer: C

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Question 3
A wave of frequency 50 Hz and wavelength 10 m is traveling through a medium. If the wave is reflected from a fixed \end, what is the frequency of the reflected wave?
A. 25 Hz
Correct B. 50 Hz
C. 75 Hz
D. 100 Hz

Correct Answer: B

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Question 4
A block of mass 5 kg is placed on a frictionless surface and attached to a horizontal spring of spring cons\tant 100 N/m. If the block is displaced by 2 m from its equilibrium position and released, what is the maximum speed of the block?
A. 2 m/s
B. 4 m/s
Correct C. 6 m/s
D. 8 m/s

Correct Answer: C

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Question 5
A particle of mass 3 kg is moving in a circular path of radius 4 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. 12 m/s^2
Correct B. 18 m/s^2
C. 24 m/s^2
D. 36 m/s^2

Correct Answer: B

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Question 6
A gas is enclosed in a container with a moveable piston. The gas is heated, cau\sing its pressure to increase. Which of the following best describes the change in the gas's internal energy?
A. The internal energy remains cons\tant.
Correct B. The internal energy increases.
C. The internal energy decreases.
D. The internal energy becomes negative.

Correct Answer: B

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Question 7
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 circle is 3 m, what is the magnitude of the particle's acceleration?
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 8
A block of mass 5 kg is placed on a frictionless surface and connected to a spring with a force cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position and released, what is the maximum speed of the block?
A. 0.5 m/s
B. 1.0 m/s
Correct C. 1.5 m/s
D. 2.0 m/s

Correct Answer: C

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Question 9
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
Correct B. 20 m/s
C. 30 m/s
D. 40 m/s

Correct Answer: B

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Question 10
A particle of mass 1 kg is moving in a circular path with a cons\tant speed of 3 m/s. If the radius of the circle is 2 m, what is the magnitude of the particle's acceleration?
A. 1 m/s^2
B. 2 m/s^2
Correct C. 3 m/s^2
D. 4 m/s^2

Correct Answer: C

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Question 11
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the dielectric cons\tant of the material between the plates is 3, calculate the capaci\tance.
A. 1.6 x 10^-10 F
Correct B. 3.2 x 10^-10 F
C. 4.8 x 10^-10 F
D. 6.4 x 10^-10 F

Correct Answer: B

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Question 12
A gas at 300 K expands from 1 L to 2 L against a cons\tant external pressure of 2 atm. Calculate the work done by the gas.
A. 1.5 kJ
Correct B. 2.5 kJ
C. 3.5 kJ
D. 4.5 kJ

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. If the radius of the path is 2 m, calculate the centripetal acceleration.
A. 1 m/s^2
B. 2 m/s^2
Correct C. 3 m/s^2
D. 4 m/s^2

Correct Answer: C

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Question 14
A simple harmonic motion has a frequency of 2 Hz and an amplitude of 0.5 m. Calculate the angular frequency.
A. 4\pi rad/s
Correct B. 6\pi rad/s
C. 8\pi rad/s
D. 10\pi rad/s

Correct Answer: B

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Question 15
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. Calculate 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 gas is heated from 300 K to 400 K at cons\tant volume. If the initial volume is 2.5 L, what is the final volume?
A. 3.33 L
Correct B. 4.17 L
C. 5.00 L
D. 6.67 L

Correct Answer: B

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Question 17
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 net force acting on the particle?
A. 10 N
B. 20 N
Correct C. 30 N
D. 40 N

Correct Answer: C

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Question 18
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 19
A quantum particle has a wave function given by \psi(x) = Ae^{-\frac{x^2}{2a^2}}. What is the probability of finding the particle between x = 0 and x = a?
A. 0.5
Correct B. 0.6
C. 0.7
D. 0.8

Correct Answer: B

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Question 20
A system is in equilibrium under the action of two forces, F1 = 10 N and F2 = 20 N, acting at an angle of 30° to each other. What is the magnitude of the resul\tant force?
A. 20 N
B. 25 N
Correct C. 30 N
D. 35 N

Correct Answer: C

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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 angle between the velocity vector and the radius vector at the ins\tant when the particle is at the top of its path?
Correct A. π/2
B. π/3
C. π/4
D. π/6

Correct Answer: A

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Question 22
A 5 μF capacitor is connected in series with a 10 kΩ resistor and a 20 V battery. If the switch is closed at t = 0, what is the time cons\tant of the circuit?
A. 0.2 s
Correct B. 0.5 s
C. 1 s
D. 2 s

Correct Answer: B

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Question 23
A wave has a frequency of 50 Hz and a wavelength of 10 m. If the wave is traveling in the positive x-direction, what is the speed of the wave?
A. 250 m/s
Correct B. 500 m/s
C. 750 m/s
D. 1000 m/s

Correct Answer: B

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Question 24
A gas has a pressure of 2 atm and a volume of 10 L. If the temperature is increased by 20°C, what is the new volume of the gas?
A. 15 L
B. 20 L
Correct C. 25 L
D. 30 L

Correct Answer: C

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Question 25
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. If the air resis\tance is negligible, 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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