POST UTME RSU 2021 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the circuit?
A. 0.5 A
B. 1 A
C. 2 A
D. 3 A
Question 2
A wave has a frequency of 50 Hz and a wavelength of 0.2 m. What is the speed of the wave?
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 3
A 100 V, 10 A AC supply is connected to a 50 Ω resistor. If the phase angle between the voltage and current is 30°, what is the power factor of the circuit?
A. 0.5
B. 0.6
C. 0.7
D. 0.8
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. 6 m/s^2
B. 8 m/s^2
C. 10 m/s^2
D. 12 m/s^2
Question 5
A 10 μF capacitor is charged to a potential difference of 20 V. What is the energy stored in the capacitor?
A. 0.2 J
B. 0.4 J
C. 0.6 J
D. 0.8 J
Question 6
A vector has a magnitude of 5 units and makes an angle of 30° with the positive x-axis. If the vector is rotated by 60° counterclockwise, what is the new magnitude of the vector?
A. 5 units
B. 6 units
C. 7 units
D. 8 units
Question 7
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 45° above the horizontal. If the air resis\tance is negligible, what is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 8
A wave has a frequency of 50 Hz and a wavelength of 0.5 m. If the wave is traveling at a speed of 20 m/s, what is the amplitude of the wave?
A. 0.1 m
B. 0.2 m
C. 0.3 m
D. 0.4 m
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. 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 10
A gas is heated from 300 K to 400 K at cons\tant volume. If the initial volume is 2 L, what is the final volume?
A. 2.5 L
B. 3 L
C. 3.5 L
D. 4 L
Question 11
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. 20 N
C. 30 N
D. 40 N
Question 12
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 20 V is applied across the plates, what is the energy stored in the capacitor?
A. 0.2 J
B. 0.4 J
C. 0.6 J
D. 0.8 J
Question 13
A light source is placed 2 m away from a convex lens of focal length 0.5 m. What is the image dis\tance?
A. -1 m
B. -2 m
C. -3 m
D. -4 m
Question 14
A particle of mass 1 kg is moving in a circular path of radius 1 m with a cons\tant speed of 2 m/s. What is the magnitude of the force acting on the particle?
A. 2 N
B. 4 N
C. 6 N
D. 8 N
Question 15
A particle of mass 1 kg is moving in a circular path of radius 2 m with a cons\tant speed of 3 m/s. If the particle is subjected to a centripetal force of 6 N, what is the magnitude of the acceleration of the particle?
A. 6 m/s^2
B. 8 m/s^2
C. 10 m/s^2
D. 12 m/s^2

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