POST UTME MADONNA UNIVERSITY 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A container is filled with 2 moles of an ideal gas at 300 K. If the pressure is 1 atm, what is the volume?
A. 22.4 L
B. 44.8 L
C. 67.2 L
D. 89.6 L
Question 2
A 50 Hz AC source is connected to a 10 Ω resistor. If the rms voltage is 100 V, what is the power consumed by the resistor?
A. 1000 W
B. 2000 W
C. 3000 W
D. 4000 W
Question 3
A sound wave with a frequency of 200 Hz has a speed of 340 m/s. What is the wavelength of the sound wave?
A. 1.7 m
B. 1.8 m
C. 1.9 m
D. 2.0 m
Question 4
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. 200 μC
B. 400 μC
C. 600 μC
D. 800 μC
Question 5
A block of mass 2 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. The block is displaced by 0.2 m from its equilibrium position and then released. What is the maximum speed of the block?
A. 0.2 m/s
B. 0.4 m/s
C. 0.6 m/s
D. 0.8 m/s
Question 6
A liquid is in a container with a small hole at the bottom. The liquid is flowing out of the hole at a rate of 0.1 m^3/s. If the density of the liquid is 1000 kg/m^3, what is the mass flow rate?
A. 100 kg/s
B. 200 kg/s
C. 300 kg/s
D. 400 kg/s
Question 7
A gas is enclosed in a container with a movable piston. The gas is heated, cau\sing its pressure to increase. If the piston is allowed to move freely, what will happen to the volume of the gas?
A. The volume will decrease
B. The volume will increase
C. The volume will remain cons\tant
D. The volume will increase and then decrease
Question 8
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. 2.5 L
B. 5.0 L
C. 7.5 L
D. 10.0 L
Question 9
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 100 V. Calculate the energy stored in the capacitor.
A. 0.5 J
B. 1 J
C. 5 J
D. 10 J
Question 10
A block of mass 5 kg is placed on a frictionless surface and attached to a horizontal spring with a spring cons\tant of 200 N/m. The block is displaced by 0.1 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the force exerted on the block by the spring at the ins\tant when the block is 0.05 m from its equilibrium position.
A. 10 N
B. 20 N
C. 50 N
D. 100 N
Question 11
A 100 V AC source is connected to a 20 Ω resistor. If the frequency of the AC source is 50 Hz, what is the rms current flowing through the resistor?
A. 2.5 A
B. 5 A
C. 10 A
D. 20 A
Question 12
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. It is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the angular frequency of the particle.
A. 5 rad/s
B. 10 rad/s
C. 20 rad/s
D. 50 rad/s
Question 13
A 10 μF capacitor is connected to a 100 V DC source. What is the energy stored in the capacitor?
A. 0.5 J
B. 1 J
C. 2 J
D. 5 J
Question 14
A simple harmonic motion has a frequency of 5 Hz and an amplitude of 2 m. If the initial phase angle is 30°, what is the equation of motion?
A. x(t) = 2 \cos\( 10\pi t + 30° \)
B. x(t) = 2 \cos\( 10\pi t - 30° \)
C. x(t) = 2 \sin\( 10\pi t + 30° \)
D. x(t) = 2 \sin\( 10\pi t - 30° \)
Question 15
A body is moving with a velocity of 5 m/s. If the force acting on it is 10 N, what is the acceleration?
A. 0.2 m/s^2
B. 0.5 m/s^2
C. 1.0 m/s^2
D. 2.0 m/s^2

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