POST UTME CALEB UNIVERSITY 2020 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A magnetic field of strength 0.5 T is directed perp\endicular to the plane of a circular loop of radius 0.1 m. Calculate the magnetic flux through the loop.
A. 0.01 Wb
B. 0.02 Wb
C. 0.03 Wb
D. 0.04 Wb
Question 2
A gas at 300 K and 1 atm expands to 2 atm. What is the new temperature in Kelvin?
A. 300 K
B. 400 K
C. 600 K
D. 800 K
Question 3
A convex lens of focal length 20 cm forms an image of an object at a dis\tance of 30 cm. What is the magnification of the lens?
A. -1
B. -0.5
C. 0.5
D. 1
Question 4
A container of volume 0.5 m^3 is filled with a gas at a pressure of 2 atm. If the temperature is increased by 20 K, what is the new pressure?
A. 2.5 atm
B. 3.5 atm
C. 4.5 atm
D. 5.5 atm
Question 5
A simple harmonic motion has an amplitude of 5 m and a frequency of 2 Hz. If the particle is at its equilibrium position at t = 0, what is its position at t = 1 s?
A. -5 m
B. -2 m
C. 2 m
D. 5 m
Question 6
A ray of light passes from air into a glass of re\fractive index $1.5$. If the angle of incidence is $30^\circ$, find the angle of re\fraction.
A. 20^\circ
B. 30^\circ
C. 40^\circ
D. 50^\circ
Question 7
A gas expands from $1.0\times 10^{-3}m^3$ to $2.0\times 10^{-3}m^3$ at a cons\tant temperature of $300K$. Find the work done by the gas.
A. 100J
B. 200J
C. 300J
D. 400J
Question 8
A quantum particle of mass $m$ is confined to a one-dimensional box of length $L$. The particle's wave function is given by $\psi(x) = A \sin\left\( \frac{n\pi x}{L}\right \)$, where $A$ is a normalization cons\tant and $n$ is an integer. What is the expectation value of the particle's position?
A. \frac{L}{2}
B. \frac{nL}{2}
C. \frac{L}{n}
D. \frac{nL}{2n}
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. 30°
C. 40°
D. 50°
Question 10
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 60° above the horizontal. What is the maximum height reached by the projectile?
A. 10 m
B. 20 m
C. 30 m
D. 40 m
Question 11
A block of mass 5 kg is susp\ended from a spring with spring cons\tant 200 N/m. If the block is displaced by 0.1 m from its equilibrium position, calculate the force exerted by the spring.
A. 20 N
B. 40 N
C. 80 N
D. 100 N
Question 12
A 10 Ω resistor is connected in series with a 20 Ω resistor. If a current of 2 A flows through the circuit, calculate the total resis\tance.
A. 10 Ω
B. 20 Ω
C. 30 Ω
D. 40 Ω
Question 13
A particle of mass 1 kg is moving in a circular path of radius 2 m with a cons\tant speed of 4 m/s. Calculate the magnitude of the force acting on the particle.
A. 8 N
B. 16 N
C. 24 N
D. 32 N
Question 14
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. If the current in the circuit is 1 A, calculate the potential difference across the 6 Ω resistor.
A. 6 V
B. 8 V
C. 10 V
D. 12 V
Question 15
A particle of mass $m$ is attached to a spring with spring cons\tant $k$. If the particle is displaced by a dis\tance $x$ from its equilibrium position and released from rest, find the equation of motion.
A. m\frac{d^2x}{dt^2}+kx=0
B. m\frac{d^2x}{dt^2}-kx=0
C. m\frac{d^2x}{dt^2}+k\frac{dx}{dt}=0
D. m\frac{d^2x}{dt^2}-k\frac{dx}{dt}=0

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: