POST UTME RSU 2021 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A particle of mass 2 kg is moving in a circular path with a radius of 3 m. The particle has a velocity of 4 m/s. What is the centripetal force acting on the particle?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 2
A block of mass 2 kg is susp\ended from a spring with a spring cons\tant of 100 N/m. If the block is displaced by 0.2 m from its equilibrium position and released, what is the maximum speed of the block as it passes through the equilibrium position?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 3
A heat engine operates between two temperatures of 500 K and 300 K. If the engine produces 1000 J of work, what is the efficiency of the engine?
A. 0.25
B. 0.30
C. 0.35
D. 0.40
Question 4
A gas is contained in a cylinder of volume 2 L at a temperature of 300 K. If the gas is heated to a temperature of 400 K, what is the new volume of the gas?
A. 2.5 L
B. 3 L
C. 3.5 L
D. 4 L
Question 5
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 6
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/s^2, what is the magnitude of the force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 7
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
Question 8
A simple harmonic motion has a maximum displacement of 2 m and a period of 4 s. If the motion starts from its equilibrium position, what is the amplitude of the motion?
A. 1 m
B. 2 m
C. 3 m
D. 4 m
Question 9
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 10
A 2 μF capacitor is connected in series with a 5 kΩ resistor and a 10 V battery. What is the time cons\tant of the circuit?
A. 0.1 s
B. 0.5 s
C. 1 s
D. 2 s
Question 11
A 10 μF capacitor is connected in series with a 20 Ω resistor. If a 100 V AC supply is connected across the circuit, what is the magnitude of the current flowing through the circuit?
A. 2.5 mA
B. 3.5 mA
C. 4.5 mA
D. 5.5 mA
Question 12
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. If the projectile lands 10 m away from the launch point, what is the initial velocity of the projectile?
A. 15 m/s
B. 20 m/s
C. 25 m/s
D. 30 m/s
Question 13
A gas is enclosed in a container with a movable piston. The gas is heated, cau\sing its temperature to increase. Which of the following statements is true about the behavior of the gas?
A. The volume of the gas decreases.
B. The pressure of the gas increases.
C. The number of moles of the gas increases.
D. The temperature of the gas remains cons\tant.
Question 14
A beam of light passes from air into a glass block. The angle of incidence is 30°. What is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 15
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

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