POST UTME AAUA 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A body of mass 2 kg is moving with a velocity of 5 m/s. If the body is subjected to a force of 10 N, what is the acceleration of the body?
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 5 m/s^2
Question 2
A block of mass 2 kg is attached to a horizontal spring with spring cons\tant 100 N/m. If the block is displaced by 0.1 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 3
A 5 μC charge is placed at the center of a circular loop of radius 10 cm. If the loop has a resis\tance of 10 Ω, what is the current induced in the loop?
A. 0.01 A
B. 0.02 A
C. 0.03 A
D. 0.04 A
Question 4
A 10 kg block is moving on a frictionless surface with a speed of 5 m/s. If a force of 20 N is applied to the block, what is the acceleration of the block?
A. 1 m/s^2
B. 2 m/s^2
C. 4 m/s^2
D. 8 m/s^2
Question 5
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 6
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 8 nF, what is the value of the dielectric cons\tant?
A. 2.5
B. 3.0
C. 3.5
D. 4.0
Question 7
A 100 Ω resistor is connected in series with a 20 μF capacitor and a 50 mH inductor. If the frequency of the AC source is 50 Hz, calculate the impedance of the circuit.
A. 120 Ω
B. 150 Ω
C. 180 Ω
D. 200 Ω
Question 8
A sound wave has a frequency of 200 Hz and a speed of 343 m/s. What is the wavelength of the sound wave?
A. 1.7 m
B. 1.8 m
C. 1.9 m
D. 2.0 m
Question 9
A 10 μF capacitor is connected in parallel with a 100 Ω resistor. If the voltage across the capacitor is 5 V, calculate the current through the resistor.
A. 0.5 A
B. 1 A
C. 2 A
D. 5 A
Question 10
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 11
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in parallel. What is the total current drawn from the battery?
A. 0.5 A
B. 1.0 A
C. 1.5 A
D. 2.0 A
Question 12
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 13
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 14
A radioactive sample decays from 100 g to 50 g in 10 years. What is the half-life of the sample?
A. 5 years
B. 10 years
C. 20 years
D. 50 years
Question 15
A 1000 Hz AC voltage source is connected to a 50 Ω resistor in series with a 10 μF capacitor. If the peak voltage of the source is 20 V, what is the peak current in the circuit?
A. 0.2 A
B. 0.4 A
C. 0.6 A
D. 0.8 A

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