POST UTME AFE BABALOLA UNIVERSITY 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A block of mass 5 kg is moving with a speed of 10 m/s on a frictionless surface. If a force of 20 N is applied to the block, what is the acceleration of the block?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 2
A simple p\endulum of length 1 m has a mass of 0.5 kg attached to it. If the p\endulum is displaced by an angle of 30° from its equilibrium position and released, what is its angular frequency?
A. 0.5 rad/s
B. 1 rad/s
C. 2 rad/s
D. 3 rad/s
Question 3
A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If the particle has a speed of 4 m/s, what is the centripetal acceleration?
A. 1 m/s²
B. 2 m/s²
C. 3 m/s²
D. 4 m/s²
Question 4
A gas at 300 K and 1.0 atm is expanded to 2.0 atm at cons\tant temperature. What is the final volume of the gas?
A. 0.50 m^3
B. 1.0 m^3
C. 2.0 m^3
D. 4.0 m^3
Question 5
A current $I$ flows through a wire of resis\tance $R$. The power dissipated in the wire is given by $P = I^2R$. If the current is doubled, what is the new power dissipated?
A. 2P
B. 4P
C. P
D. \frac{1}{2}P
Question 6
A particle of mass $m$ is moving in a circular orbit of radius $r$ under the influence of a central force given by $F = k \frac{1}{r^2}$, where $k$ is a cons\tant. If the particle's speed is $v$, what is the total energy of the particle?
A. 0
B. -\frac{1}{2}mv^2
C. \frac{1}{2}mv^2
D. -\frac{k}{r}
Question 7
A particle of mass $m$ is moving in a circular orbit of radius $r$ under the influence of a central force given by $F = k \frac{1}{r^2}$, where $k$ is a cons\tant. If the particle's speed is $v$, what is the angular momentum of the particle?
A. mv
B. mv^2
C. mv^3
D. mvr
Question 8
A quantum particle has a wave function given by ψ(x) = Ae^\( -αx^2 \). If the average value of x is 0.5 m, calculate the value of α.
A. 0.5 m^\( -2 \)
B. 1 m^\( -2 \)
C. 2 m^\( -2 \)
D. 5 m^\( -2 \)
Question 9
A beam of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.
A. 20°
B. 25°
C. 30°
D. 35°
Question 10
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 experiences a centripetal acceleration of 2 m/s^2, what is the magnitude of the net force acting on the particle?
A. 8 N
B. 12 N
C. 16 N
D. 20 N
Question 11
A magnetic field $B$ is directed perp\endicular to a current-carrying wire. The force on the wire is given by $F = IBl$. If the current is doubled, what is the new force?
A. 2F
B. 4F
C. F
D. \frac{1}{2}F
Question 12
A light ray passes from air into a glass slab 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°
Question 13
A 5.0 L flask contains 2.0 mol of an ideal gas at 300 K. What is the pressure of the gas?
A. 1.0 atm
B. 2.0 atm
C. 3.0 atm
D. 4.0 atm
Question 14
A parallel plate capacitor has a capaci\tance of 20 μF and is charged to a potential difference of 100 V. If the plates are separated by a dis\tance of 2 mm, what is the surface charge density?
A. 10 μC/m²
B. 20 μC/m²
C. 30 μC/m²
D. 40 μC/m²
Question 15
A uniform magnetic field of strength 2.0 T is applied to a long solenoid. If the solenoid has 500 turns per meter and carries a current of 5.0 A, what is the magnetic flux through a 0.20 m length of the solenoid?
A. 0.50 Wb
B. 0.25 Wb
C. 1.0 Wb
D. 2.0 Wb

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: