POST UTME UNILORIN 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A wave has a frequency of 50 Hz and a wavelength of 0.5 m. Calculate the speed of the wave.
A. 25 m/s
B. 50 m/s
C. 75 m/s
D. 100 m/s
Question 2
A ray of light passes through a lens and is focused at a dis\tance of 20 cm from the lens. If the object dis\tance is 30 cm, what is the focal length?
A. 10 cm
B. 20 cm
C. 30 cm
D. 40 cm
Question 3
A sound wave has a frequency of 200 Hz and a wavelength of 1.5 m. What is the speed of the sound wave?
A. 300 m/s
B. 400 m/s
C. 500 m/s
D. 600 m/s
Question 4
A particle of mass 1 kg is moving in a circular path with a radius of 2 m. If the particle's speed is 5 m/s, calculate the centripetal acceleration.
A. 1.25 m/s^2
B. 2.5 m/s^2
C. 3.75 m/s^2
D. 5 m/s^2
Question 5
A gas at 300 K and 1 atm expands to 3 times its original volume. Calculate the final pressure of the gas.
A. 0.33 atm
B. 0.67 atm
C. 1 atm
D. 1.5 atm
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. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 7
A heat engine operates between two reservoirs at temperatures 500 K and 300 K. If the engine absorbs 1000 J of heat from the high-temperature reservoir, what is the efficiency of the engine?
A. 0.2
B. 0.3
C. 0.4
D. 0.5
Question 8
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 its acceleration?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 9
A capacitor of capaci\tance 10 μF is connected to a battery of voltage 5 V. If the capacitor is initially uncharged, what is the charge stored on the capacitor after 2 seconds?
A. 50 μC
B. 100 μC
C. 150 μC
D. 200 μC
Question 10
A particle is moving in a circular path with a cons\tant speed of 5 m/s. The radius of the path is 2 m. What is the magnitude of the force acting on the particle?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 11
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 A
B. 2 A
C. 3 A
D. 4 A
Question 12
A simple harmonic motion has a period of 2 seconds and an amplitude of 3 m. If the particle is initially at rest, what is the maximum acceleration of the particle?
A. 6 m/s^2
B. 12 m/s^2
C. 18 m/s^2
D. 24 m/s^2
Question 13
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 20 V is applied across it, what is the charge stored on each plate?
A. 0.2 C
B. 0.4 C
C. 0.6 C
D. 0.8 C
Question 14
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 net force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 15
A particle moves in a circular path with a cons\tant speed of 4.0 m/s. If the radius of the circle is 2.0 m, calculate the magnitude of the acceleration of the particle.
A. 4.0 m/s^2
B. 8.0 m/s^2
C. 12.0 m/s^2
D. 16.0 m/s^2

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