POST UTME CRAWFORD UNIVERSITY 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A beam of light is incident on a glass surface at an angle of 60°. If the re\fractive index of the glass is 1.5, calculate the angle of re\fraction.
A. 40°
B. 50°
C. 60°
D. 70°
Question 2
A particle of mass 3 kg is moving in a circular path with a radius of 3 m. If it has a velocity of 6 m/s, calculate the centripetal acceleration.
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 3
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. If the circuit is closed, what is the current flowing through the 4 Ω resistor?
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 4
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. If air resis\tance is neglected, what is the maximum height reached by the projectile?
A. 4 m
B. 5 m
C. 5.1 m
D. 6 m
Question 5
A 12 V battery is connected to a 4 Ω resistor. What is the current flowing through the resistor?
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 6
A gas is compressed from 1 m^3 to 0.5 m^3 at cons\tant pressure. If the initial temperature is 300 K, calculate the final temperature.
A. 600 K
B. 800 K
C. 1000 K
D. 1200 K
Question 7
A block of mass 3 kg is placed on a frictionless surface and subjected to a horizontal force of 8 N. If the block is initially at rest, what is its acceleration?
A. 2.67 m/s^2
B. 3.33 m/s^2
C. 4 m/s^2
D. 5 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 atm, calculate the final pressure.
A. 1.33 atm
B. 2 atm
C. 3 atm
D. 4 atm
Question 9
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 wave's velocity?
A. Positive x-direction
B. Negative x-direction
C. Positive y-direction
D. Negative y-direction
Question 10
A block of mass 5 kg is susp\ended from a spring with a spring cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position, what is the magnitude of the force exerted by the spring on the block?
A. 100 N
B. 200 N
C. 300 N
D. 400 N
Question 11
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 0.5 m from its equilibrium position and released, calculate the maximum speed of the particle.
A. 0.5 m/s
B. 1 m/s
C. 2 m/s
D. 5 m/s
Question 12
A circuit consists of a 100 Ω resistor and a 200 Ω resistor connected in parallel. A 12 V battery is connected across the circuit. What is the total resis\tance of the circuit?
A. 50 Ω
B. 75 Ω
C. 100 Ω
D. 150 Ω
Question 13
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. It is displaced by 0.5 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the total energy of the particle at t = 0.
A. 12.5 J
B. 25 J
C. 50 J
D. 100 J
Question 14
A 50 Hz, 200 V AC source is connected to a 100 Ω resistor. Calculate the rms value of the current flowing through the resistor.
A. 1 A
B. 2 A
C. 4 A
D. 5 A
Question 15
A particle of mass 2 kg is moving in a circular path with a radius of 2 m. If it has a velocity of 4 m/s, calculate the centripetal force.
A. 8 N
B. 16 N
C. 32 N
D. 64 N

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