POST UTME REDEEMERS UNIVERSITY 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A coil of wire of radius 0.1 m and resis\tance 10 Ω is connected to a battery of emf 12 V. If the current in the coil is 2 A, what is the magnitude of the magnetic field at the center of the coil?
A. 0.1 T
B. 0.2 T
C. 0.3 T
D. 0.4 T
Question 2
A particle of mass 2.5 kg is moving in a circular path of radius 3.0 m with a cons\tant speed of 4.0 m/s. If the particle is subjected to a centripetal force of 10.0 N, what is the magnitude of the acceleration of the particle?
A. 5.0 m/s^2
B. 10.0 m/s^2
C. 20.0 m/s^2
D. 30.0 m/s^2
Question 3
A simple harmonic motion has a frequency of 2 Hz and an amplitude of 0.5 m. If the motion starts from its equilibrium position, what is the maximum 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 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. 8 m/s^2
B. 12 m/s^2
C. 16 m/s^2
D. 20 m/s^2
Question 5
A 10 μF capacitor is connected in series with a 5 kΩ resistor and a 12 V battery. What is the time cons\tant of the circuit?
A. 0.25 s
B. 0.5 s
C. 1 s
D. 2 s
Question 6
A quantum particle has a wave function ψ(x) = Ae^\( -αx^2 \). If the particle is observed at x = 1, what is the probability of finding the particle in the region x = 0 to x = 1?
A. 0.5
B. 0.6
C. 0.7
D. 0.8
Question 7
A 5 mH inductor is connected in series with a 10 Ω resistor and a 12 V battery. What is the time cons\tant of the circuit?
A. 0.25 s
B. 0.5 s
C. 1 s
D. 2 s
Question 8
A gas is enclosed in a container of volume 2.5 L at a temperature of 300 K. If the volume is increased to 5 L at a cons\tant temperature, what is the new pressure of the gas?
A. 1.5 atm
B. 2.5 atm
C. 3.0 atm
D. 4.0 atm
Question 9
A beam of light is incident on a glass surface at an angle of 60°. If the re\fractive index of glass is 1.5, what is the angle of re\fraction?
A. 30°
B. 40°
C. 50°
D. 60°
Question 10
A wave has a frequency of 200 Hz and a wavelength of 0.5 m. What is the speed of the wave?
A. 100 m/s
B. 200 m/s
C. 300 m/s
D. 400 m/s
Question 11
A sound wave with a frequency of 200 Hz has a maximum displacement of 0.01 m. Calculate the amplitude of the wave.
A. 0.005 m
B. 0.01 m
C. 0.015 m
D. 0.02 m
Question 12
A projectile is launched at an angle of 45° with an initial velocity of 20 m/s. 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 13
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 0.5 m from its equilibrium position and released from rest, determine the maximum velocity of the particle as a function of time.
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 14
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. If the circuit is closed, what is the current flowing through the 4 Ω resistor?
A. 0.6 A
B. 1.2 A
C. 1.8 A
D. 2.4 A
Question 15
A light ray passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 25°
C. 30°
D. 35°

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