POST UTME UNIOSUN 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A particle of mass 0.5 kg is attached to a spring with spring cons\tant 100 N/m. If the particle is displaced by 0.2 m from its equilibrium position and released from rest, calculate the maximum speed of the particle.
A. 1.0 m/s
B. 1.4 m/s
C. 1.8 m/s
D. 2.2 m/s
Question 2
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 3
A 100 Ω resistor is connected in series with a 50 Ω resistor and a 200 Ω resistor. If a 12 V battery is connected across the circuit, calculate the current flowing through the 50 Ω resistor.
A. 0.24 A
B. 0.36 A
C. 0.48 A
D. 0.60 A
Question 4
A body is moving with a uniform acceleration of 2 m/s². If its initial velocity is 5 m/s, what is its velocity after 3 seconds?
A. 7 m/s
B. 8 m/s
C. 9 m/s
D. 10 m/s
Question 5
A ray of light passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.
A. 18.43°
B. 20.73°
C. 22.03°
D. 23.33°
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. What is the magnitude of the force acting on the particle?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 7
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 acceleration due to gravity is 9.8 m/s^2, what is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 8
A 100 Ω resistor is connected in series with a 200 Ω resistor. What is the equivalent resis\tance?
A. 150 Ω
B. 200 Ω
C. 250 Ω
D. 300 Ω
Question 9
A gas occupies a volume of 2.5 L at a pressure of 1.5 atm. If the temperature is increased by 20°C, what is the new volume?
A. 3.0 L
B. 3.5 L
C. 4.0 L
D. 4.5 L
Question 10
A nucleus of mass number 240 and atomic number 94 undergoes \alpha decay. If the daughter nucleus has a mass number of 228, calculate the energy released in the decay.
A. 1.23 x 10^\( -12 \) J
B. 1.45 x 10^\( -12 \) J
C. 1.67 x 10^\( -12 \) J
D. 1.89 x 10^\( -12 \) J
Question 11
A block of mass 5 kg is moving with a velocity of 2 m/s on a frictionless surface. If the block is subjected to a force of 10 N, what is the acceleration of the block?
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 5 m/s^2
Question 12
A block of mass 5 kg is moving in a straight line with a velocity of 10 m/s. If the block is subjected to a force of 20 N, what is the acceleration of the block?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 13
A wave has a frequency of 20 Hz and a wavelength of 0.5 m. If the wave is traveling in the positive x-direction, what is the direction of the particle velocity?
A. positive x-direction
B. negative x-direction
C. positive y-direction
D. negative y-direction
Question 14
A point charge of 2 μC is placed at the origin. What is the electric potential at a point 3 m away from the charge?
A. 36 V
B. 18 V
C. 9 V
D. 6 V
Question 15
A 10 kg object is moving in a circular path with a radius of 2 m. If the object has a speed of 5 m/s, what is the centripetal acceleration?
A. 2.5 m/s^2
B. 5.0 m/s^2
C. 7.5 m/s^2
D. 10.0 m/s^2

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