POST UTME LAUTECH 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A gas is enclosed in a container with a movable piston. The gas is heated at cons\tant pressure, cau\sing its volume to increase by 10%. If the initial volume is 2.5 L, what is the final volume of the gas?
A. 2.75 L
B. 2.8 L
C. 2.85 L
D. 3.0 L
Question 2
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. 0.01 F
B. 0.02 F
C. 0.03 F
D. 0.04 F
Question 3
A wave has a frequency of 100 Hz and a wavelength of 0.5 m. What is the speed of the wave?
A. 50 m/s
B. 100 m/s
C. 150 m/s
D. 200 m/s
Question 4
A gas expands from an initial volume of 0.1 m^3 to a final volume of 0.5 m^3 at a cons\tant temperature of 300 K. If the initial pressure is 10^5 Pa, calculate the final pressure of the gas.
A. 1.67 × 10^5 Pa
B. 3.34 × 10^5 Pa
C. 5.01 × 10^5 Pa
D. 6.68 × 10^5 Pa
Question 5
A capacitor consists of two parallel plates, each with an area of 0.01 m^2. The plates are separated by a dis\tance of 0.001 m and are charged to a potential difference of 10 V. What is the capaci\tance of the capacitor?
A. 0.01 F
B. 0.02 F
C. 0.03 F
D. 0.04 F
Question 6
A gas is heated at cons\tant volume. Which of the following statements is true about the change in the gas's internal energy?
A. The internal energy increases
B. The internal energy decreases
C. The internal energy remains cons\tant
D. The internal energy is not affected
Question 7
A ray of light passes from air into a glass block at an angle of incidence of 30°. If the re\fractive index of the glass is 1.5, calculate the angle of re\fraction.
A. 20°
B. 25°
C. 30°
D. 35°
Question 8
A 5 kg block is moving with a speed of 10 m/s on a frictionless surface. If a force of 20 N is applied to the block in the direction of motion, what is the acceleration of the block?
A. 0.4 m/s^2
B. 0.8 m/s^2
C. 1.2 m/s^2
D. 1.6 m/s^2
Question 9
A 100 μF capacitor is connected in parallel with a 50 Ω resistor. A 10 V DC source is applied across the circuit. What is the current flowing through the resistor?
A. 0.2 A
B. 0.4 A
C. 0.6 A
D. 0.8 A
Question 10
A 10 V battery is connected to a 2 Ω resistor. If the current flowing through the resistor is 2 A, what is the power consumed by the resistor?
A. 20 W
B. 40 W
C. 60 W
D. 80 W
Question 11
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 60° above the horizontal. If air resis\tance is neglected, what is the maximum height reached by the projectile?
A. 10.0 m
B. 12.5 m
C. 15.0 m
D. 17.5 m
Question 12
A block of mass 2.5 kg is attached to a horizontal spring with a force cons\tant of 200 N/m. The block is displaced by 0.15 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, what is the maximum speed of the block?
A. 0.75 m/s
B. 1.25 m/s
C. 1.88 m/s
D. 2.50 m/s
Question 13
A 2 kg object is moving in a straight line with an initial velocity of 5 m/s. After 2 seconds, its velocity is 3 m/s. What is the acceleration of the object?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 14
A particle of mass 0.5 kg is moving in a circular path of radius 1.5 m with a cons\tant speed of 4 m/s. If the particle is subject to a centripetal force of 10 N, calculate the time it takes for the particle to complete one full revolution.
A. 1.5 s
B. 2.5 s
C. 3.5 s
D. 4.5 s
Question 15
A thermodynamic system undergoes a process from state A to state B. If the change in internal energy is 100 J and the work done by the system is 50 J, calculate the heat transfer.
A. -50 J
B. -100 J
C. 50 J
D. 100 J

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