POST UTME AAUA 2023 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 of radius 3 m with a speed of 4 m/s. If the particle is subject to a centripetal force of 12 N, what is the angular velocity of the particle?
A. 2 rad/s
B. 4 rad/s
C. 6 rad/s
D. 8 rad/s
Question 2
A container of volume 2 L contains 1 mole of an ideal gas at 300 K. If the gas is heated to 600 K, what is the final pressure?
A. 2 atm
B. 4 atm
C. 6 atm
D. 8 atm
Question 3
A particle moves in a circular path with a radius of 2 m. If it completes one revolution in 4 s, what is its angular velocity?
A. 0.5 rad/s
B. 1 rad/s
C. 2 rad/s
D. 4 rad/s
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 acceleration of 2 m/s^2, what is the magnitude of the force acting on the particle?
A. 10 N
B. 12 N
C. 15 N
D. 20 N
Question 5
A 3 kg block is attached to a horizontal spring with a force cons\tant of 300 N/m. If the block is displaced by 0.3 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 2.5 m/s
B. 3.0 m/s
C. 3.5 m/s
D. 4.0 m/s
Question 6
A circuit consists of a 10 Ω resistor, a 20 Ω resistor, and a 5 Ω resistor connected in series. If a voltage of 12 V is applied across the circuit, what is the current flowing through the 5 Ω resistor?
A. 0.5 A
B. 1 A
C. 1.5 A
D. 2 A
Question 7
A gas expands from an initial volume of 2 L to a final volume of 5 L against a cons\tant external pressure of 1 atm. If the initial temperature is 300 K, calculate the work done by the gas.
A. 150 J
B. 200 J
C. 250 J
D. 300 J
Question 8
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 9
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. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 10
A particle moves in a circular path with a cons\tant speed of 5 m/s. If the radius of the circle is 2 m, calculate the magnitude of the acceleration of the particle.
A. 10 m/s^2
B. 12.5 m/s^2
C. 15 m/s^2
D. 20 m/s^2
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. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the force?
A. 10 N
B. 12 N
C. 15 N
D. 20 N
Question 12
A 2 kg block of ice at 0°C is placed in a 10°C water bath. Assuming the specific heat capacity of ice is 2090 J/(kg°C) and the latent heat of fusion of ice is 334 kJ/kg, calculate the time it takes for the ice to melt completely.
A. 120 s
B. 150 s
C. 180 s
D. 210 s
Question 13
A block of mass 5 kg is placed on a frictionless surface and attached to a horizontal spring with a force cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 1.5 m/s
B. 2.0 m/s
C. 2.5 m/s
D. 3.0 m/s
Question 14
A 5 kg block is attached to a horizontal, massless spring with a force cons\tant of 200 N/m. The block is displaced by 2 m from its equilibrium position and released from rest. What is the maximum speed of the block?
A. 4 m/s
B. 8 m/s
C. 16 m/s
D. 32 m/s
Question 15
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 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

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