POST UTME CHRISTOPHER UNIVERSITY 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A charged particle moves through a magnetic field. If the particle's velocity is perp\endicular to the magnetic field, what is the direction of the force exerted on the particle?
A. towards the magnetic field
B. perp\endicular to the magnetic field
C. away from the magnetic field
D. in a circular path around the magnetic field
Question 2
A block of mass 3 kg is attached to a horizontal, massless spring with a force cons\tant of 150 N/m. If the block is displaced by 0.1 m from its equilibrium position and released from rest, what is the frequency of the oscillations?
A. 2 Hz
B. 3 Hz
C. 4 Hz
D. 5 Hz
Question 3
A particle has a mass of 2 kg and a charge of 3 C. If it is placed in a uniform electric field of 4 N/C, what is the force exerted on the particle?
A. 6 N
B. 8 N
C. 12 N
D. 16 N
Question 4
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 centripetal acceleration?
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 4 m/s^2
Question 5
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. 10 m/s^2
B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 6
A projectile is launched from the ground with an initial velocity of 25 m/s at an angle of 45° above the horizontal. If air resis\tance is neglected, what is the range of the projectile?
A. 25 m
B. 30 m
C. 35 m
D. 40 m
Question 7
A body is moving in a circular path with a cons\tant speed of 10 m/s. If the radius of the circle is 3 m, what is the centripetal acceleration of the body?
A. 4 m/s^2
B. 6 m/s^2
C. 8 m/s^2
D. 10 m/s^2
Question 8
A gas is heated from 300 K to 400 K at cons\tant volume. If the initial pressure is 1.2 atm, what is the final pressure?
A. 1.5 atm
B. 1.8 atm
C. 2.0 atm
D. 2.2 atm
Question 9
A 100 V AC source is connected in series with a 20 Ω resistor and a 10 μF capacitor. If the frequency of the source is 50 Hz, determine the current flowing through the circuit.
A. 2 A
B. 3 A
C. 4 A
D. 5 A
Question 10
A particle has a mass of 1 kg and a charge of 2 C. If it is placed in a uniform electric field of 3 N/C, what is the force exerted on the particle?
A. 2 N
B. 4 N
C. 6 N
D. 8 N
Question 11
A \sinusoidal voltage of 10 V is applied to a circuit with a resis\tance of 5 Ω. What is the magnitude of the current in the circuit?
A. 0.5 A
B. 1 A
C. 2 A
D. 5 A
Question 12
A heat engine operates between two temperatures of 500 K and 300 K. If the efficiency is 30%, what is the work done?
A. 100 J
B. 200 J
C. 300 J
D. 400 J
Question 13
A \tank contains 500 kg of water at a temperature of 30°C. If 150 kg of water is added to the \tank at a temperature of 80°C, what is the final temperature of the water in the \tank?
A. 35°C
B. 40°C
C. 45°C
D. 50°C
Question 14
A parallel plate capacitor has a capaci\tance of 10 μF. If the potential difference between the plates is increased from 10 V to 20 V, what is the new charge on the capacitor?
A. 20 μC
B. 40 μC
C. 60 μC
D. 80 μC
Question 15
A wave has a frequency of 50 Hz and a wavelength of 0.2 m. If the wave is traveling in the positive x-direction, what is the direction of the group velocity?
A. Positive x-direction
B. Negative x-direction
C. Positive y-direction
D. Negative y-direction

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