POST UTME MADONNA UNIVERSITY 2024 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 with a cons\tant speed of 4 m/s. If the radius of the circular path is 3 m, calculate the magnitude of the centripetal acceleration.
A. 2 m/s^2
B. 4 m/s^2
C. 8 m/s^2
D. 16 m/s^2
Question 2
A gas is heated from 300 K to 400 K at cons\tant volume. If the initial pressure is 2 atm, what is the final pressure?
A. 1 atm
B. 2 atm
C. 3 atm
D. 4 atm
Question 3
A magnetic field of 0.5 T is applied to a coil of wire with 100 turns. The coil has a radius of 0.1 m. Calculate the magnetic flux through the coil.
A. 0.01 Wb
B. 0.02 Wb
C. 0.03 Wb
D. 0.04 Wb
Question 4
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 subjected to a centripetal force of 10 N, what is its angular velocity?
A. 0.5 rad/s
B. 1 rad/s
C. 2 rad/s
D. 4 rad/s
Question 5
A particle of mass $m$ is moving in a circular path of radius $r$ with a cons\tant speed $v$. The particle experiences a centripetal force $F_c=\frac{mv^2}{r}$. If the particle's speed is $5\text{ m/s}$ and the radius of the path is $2\text{ m}$, calculate the centripetal force.
A. 0.25 N
B. 0.5 N
C. 1 N
D. 2 N
Question 6
A block of wood with a density of 500 kg/m³ is submerged in water. Calculate the buoyant force acting on the block.
A. 200 N
B. 300 N
C. 400 N
D. 500 N
Question 7
A lens with focal length 0.2 m is used to form an image of an object at a dis\tance of 0.5 m. What is the magnification of the lens?
A. -2.0
B. -1.0
C. 1.0
D. 2.0
Question 8
A simple harmonic motion is described by the equation $x(t)=A\sin\( omega t+phi \)$. If the amplitude is $0.1\text{ m}$, the angular frequency is $2pi\text{ rad/s}$, and the phase angle is $\frac{pi}{4}$, calculate the displacement at $t=0.1\text{ s}$.
A. 0.05 m
B. 0.1 m
C. 0.15 m
D. 0.2 m
Question 9
A wave of frequency 50 Hz and wavelength 0.2 m is traveling through a medium. If the wave is tripled in frequency, what is the new wavelength?
A. 0.0667 m
B. 0.1 m
C. 0.2 m
D. 0.3 m
Question 10
A current of 2 A flows through a resistor of 4 Ω. Calculate the power dissipated in the resistor.
A. 4 W
B. 8 W
C. 16 W
D. 32 W
Question 11
A block of mass 5 kg is placed on a frictionless surface and a horizontal force of 10 N is applied to it. If the block starts from rest, calculate its velocity after 2 s.
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 12
A photon of energy 2 eV is incident on a metal surface with work function 1 eV. Calculate the kinetic energy of the emitted electron.
A. 0.5 eV
B. 1 eV
C. 1.5 eV
D. 2 eV
Question 13
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the dielectric cons\tant of the material between the plates is 3, calculate the capaci\tance.
A. 0.01 F
B. 0.02 F
C. 0.04 F
D. 0.08 F
Question 14
A wave has a frequency of 50 Hz and a wavelength of 0.1 m. Calculate the speed of the wave.
A. 5 m/s
B. 10 m/s
C. 20 m/s
D. 50 m/s
Question 15
A magnetic field of 0.5 T is applied to a current-carrying wire of length 2 m. If the current is 2 A, calculate the force experienced by the wire.
A. 1 N
B. 2 N
C. 3 N
D. 4 N

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