POST UTME COVENANT UNIVERSITY 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A particle is moving in a circular path with a cons\tant speed of 5 m/s. If the radius of the circle is 2 m, what is the magnitude of the acceleration of the particle?
A. 10 m/s^2
B. 20 m/s^2
C. 30 m/s^2
D. 40 m/s^2
Question 2
A ray of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 3
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. If the current in the circuit is 2 A, what is the voltage across the 6 Ω resistor?
A. 6 V
B. 8 V
C. 10 V
D. 12 V
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. 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 5
A thermodynamic system undergoes a process from an initial state (P1, V1) to a final state (P2, V2). If the work done by the system is 100 J and the heat absorbed by the system is 200 J, what is the change in internal energy of the system?
A. -100 J
B. 0 J
C. 100 J
D. 200 J
Question 6
A wave has a frequency of 50 Hz and a wavelength of 2 m. If the wave is traveling in the positive x-direction, what is the speed of the wave?
A. 50 m/s
B. 75 m/s
C. 100 m/s
D. 125 m/s
Question 7
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/s², what is the magnitude of the force acting on the particle?
A. 10 N
B. 12 N
C. 15 N
D. 18 N
Question 8
A 100 V AC supply is connected to a 50 Ω resistor in series with a 20 mH inductor. If the frequency of the supply is 50 Hz, what is the impedance of the circuit?
A. 60 Ω
B. 70 Ω
C. 80 Ω
D. 90 Ω
Question 9
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 force acting on the particle?
A. 10 N
B. 12 N
C. 15 N
D. 20 N
Question 10
A light ray passes from air into a glass block with a re\fractive index of 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 30°
C. 41.81°
D. 50°
Question 11
A ray of light passes from air into a glass slab with a re\fractive index of 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 25°
C. 30°
D. 35°
Question 12
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. 8 m/s^2
B. 12 m/s^2
C. 16 m/s^2
D. 20 m/s^2
Question 13
A projectile is launched at an angle of 45° to the horizontal with an initial velocity of 20 m/s. What is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 14
A gas is enclosed in a container with a moveable piston. The gas is heated at cons\tant volume. What happens to the pressure of the gas?
A. The pressure increases exponentially.
B. The pressure increases linearly.
C. The pressure remains cons\tant.
D. The pressure decreases exponentially.
Question 15
A light source is placed 2 m away from a convex lens with a focal length of 0.5 m. If the light source is moved 1 m closer to the lens, what is the new image dis\tance?
A. 1 m
B. 1.33 m
C. 2 m
D. 3 m

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