POST UTME MADONNA UNIVERSITY 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A capacitor consists of two parallel plates, each of area 0.1 m^2, separated by a dis\tance of 0.01 m. The capaci\tance of the capacitor is 10^-6 F. If a potential difference of 10 V is applied across the plates, what is the magnitude of the electric field between the plates?
A. 1000 V/m
B. 2000 V/m
C. 3000 V/m
D. 4000 V/m
Question 2
A 50 Hz, 200 V AC supply is connected to a 100 Ω resistor. Calculate the power consumed by the resistor.
A. 200 W
B. 400 W
C. 600 W
D. 800 W
Question 3
A projectile is launched at an angle of 30° to the horizontal with an initial velocity of 20 m/s. What is its range?
A. 40 m
B. 50 m
C. 60 m
D. 70 m
Question 4
A 2.5 kg block of wood is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.15 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, calculate the maximum speed of the block as it passes through its equilibrium position.
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 5
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the circuit?
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 6
A 2.5 mH inductor is connected in series with a 10 Ω resistor and a 20 V AC source. If the frequency of the source is 50 Hz, calculate the impedance of the circuit.
A. 10 Ω
B. 20 Ω
C. 30 Ω
D. 40 Ω
Question 7
A circuit consists of a resistor of resis\tance 10 Ω and an inductor of induc\tance 5 H. If a voltage of 20 V is applied across the circuit, what is the current flowing through the circuit?
A. 1 A
B. 1.33 A
C. 2 A
D. 3 A
Question 8
A block of mass 5 kg is placed on a frictionless surface and attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 0.2 m from its equilibrium position and released, what is the magnitude of the acceleration of the block?
A. 5 m/s^2
B. 10 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 9
A lens with focal length $f$ is used to form an image of an object at a dis\tance $d$. What is the magnification of the lens?
A. \( \frac{d}{f} \)
B. \( \frac{f}{d} \)
C. \( \frac{d - f}{f} \)
D. \( \frac{f - d}{f} \)
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. Calculate the magnitude of the force acting on the particle.
A. 16 N
B. 32 N
C. 48 N
D. 64 N
Question 11
A 50 Hz AC generator produces an emf of 100 V. If the generator is connected to a 10 Ω resistor, calculate the current flowing through the resistor.
A. 5 A
B. 10 A
C. 15 A
D. 20 A
Question 12
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. 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 simple harmonic motion has a maximum displacement of 5 m and a frequency of 2 Hz. If the amplitude of the motion is 3 m, what is the angular frequency of the motion?
A. 10.2 rad/s
B. 12.57 rad/s
C. 15.1 rad/s
D. 18.5 rad/s
Question 14
A simple p\endulum of length 1 m is released from an initial angle of 30°. If the p\endulum is released from rest, what is the maximum speed of the p\endulum?
A. 1.4 m/s
B. 1.7 m/s
C. 2.0 m/s
D. 2.3 m/s
Question 15
A 5 kg block is moving with a speed of 3 m/s. If the block is subjected to a force of 10 N, calculate the acceleration of the block.
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2

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