POST UTME CRAWFORD UNIVERSITY 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A container filled with water is placed under a pressure of 101325 Pa. What is the pressure at a depth of 10 m?
A. 101325 Pa
B. 101325 + 9810 Pa
C. 101325 - 9810 Pa
D. 101325 + 196200 Pa
Question 2
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm in front of it. What is the magnification of the image?
A. 0.5
B. 0.6
C. 0.7
D. 0.8
Question 3
A parallel-plate capacitor consists of two plates separated by a dis\tance $d$. The plates have a surface charge density $σ$. Assuming the electric field between the plates is uniform, find the capaci\tance $C$ of the capacitor.
A. C = ε_0 A / d
B. C = ε_0 A / d^2
C. C = ε_0 A / d^3
D. C = ε_0 A / d^4
Question 4
A simple harmonic motion has a maximum displacement of 5 cm and a frequency of 2 Hz. What is the angular frequency?
A. 4\pi rad/s
B. 2\pi rad/s
C. 8\pi rad/s
D. 10\pi rad/s
Question 5
A simple harmonic motion has a maximum displacement of 2 m and a period of 4 s. What is the angular frequency?
A. 0.5 rad/s
B. 1 rad/s
C. 2 rad/s
D. 4 rad/s
Question 6
A particle of mass $m$ is attached to a spring with spring cons\tant $k$. The particle is displaced from its equilibrium position by a dis\tance $x_0$ and released from rest. Assuming the motion is simple harmonic, find the angular frequency $omega$ of the particle's motion.
A. ω = k / m
B. ω = √\( k / m \)
C. ω = 2π√\( k / m \)
D. ω = π√\( k / m \)
Question 7
A sound wave has a frequency of 200 Hz and a speed of 343 m/s. What is the wavelength?
A. 0.0017 m
B. 0.017 m
C. 0.17 m
D. 1.7 m
Question 8
A 5 kg block is moving on a horizontal surface with a velocity of 2 m/s. If a force of 10 N is applied to the block, what is its acceleration?
A. 0.2 m/s^2
B. 0.4 m/s^2
C. 0.6 m/s^2
D. 0.8 m/s^2
Question 9
A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If it has a velocity of 4 m/s, what is its angular momentum?
A. 6 kg m^2/s
B. 12 kg m^2/s
C. 24 kg m^2/s
D. 48 kg m^2/s
Question 10
A wave has a frequency of 50 Hz and a wavelength of 2 m. What is the speed of the wave?
A. 100 m/s
B. 50 m/s
C. 200 m/s
D. 250 m/s
Question 11
A charged particle moves through a uniform magnetic field. If the particle's velocity is perp\endicular to the magnetic field, what is the direction of the force exerted on the particle?
A. towards the magnetic field
B. away from the magnetic field
C. perp\endicular to the magnetic field
D. in the direction of the magnetic field
Question 12
A wave with a frequency of 50 Hz and a wavelength of 0.2 m is traveling through a medium. What is the speed of the wave?
A. 10 m/s
B. 20 m/s
C. 50 m/s
D. 100 m/s
Question 13
A magnetic field of 0.5 T is applied to a coil of 100 turns and a radius of 0.1 m. If the current in the coil is 2 A, what is the torque experienced by the coil?
A. 0.1 Nm
B. 0.2 Nm
C. 0.3 Nm
D. 0.4 Nm
Question 14
A radioactive sample of Uranium-238 decays into Thorium-234 with a half-life of 4.5 billion years. If the initial mass of the Uranium-238 sample is 100 grams, what is the mass of the sample after 9 billion years?
A. 12.5 grams
B. 25 grams
C. 50 grams
D. 100 grams
Question 15
A 2.5 V battery is connected in series with a 5 Ω resistor and a 10 Ω resistor. What is the current flowing through the 5 Ω resistor?
A. 0.2 A
B. 0.5 A
C. 1.0 A
D. 1.5 A

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