POST UTME ELIZADE UNIVERSITY 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 100 W light bulb is connected to a 220 V power source. If the resis\tance of the bulb is 10 Ω, calculate the current flowing through the bulb.
A. 5 A
B. 10 A
C. 15 A
D. 20 A
Question 2
A particle is moving in a circular path with a radius of 3 m. If the particle completes one revolution in 2 s, what is its angular velocity?
A. 0.5 rad/s
B. 1 rad/s
C. 2 rad/s
D. 3 rad/s
Question 3
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 4
A circuit consists of a 10 Ω resistor, a 20 Ω resistor, and a 40 Ω resistor connected in parallel. If a potential difference of 20 V is applied across the circuit, what is the current flowing through the 10 Ω resistor?
A. 0.25 A
B. 0.5 A
C. 1 A
D. 2 A
Question 5
A gas is enclosed in a container with a movable piston. The gas is heated, cau\sing it to expand. If the piston is allowed to move freely, what will happen to the pressure of the gas?
A. The pressure will increase
B. The pressure will decrease
C. The pressure will remain cons\tant
D. The pressure will increase and then decrease
Question 6
A 100 Ω resistor is connected in series with a 200 Ω resistor and a 50 Ω resistor. What is the equivalent resis\tance of the circuit?
A. 100 Ω
B. 200 Ω
C. 300 Ω
D. 400 Ω
Question 7
A block of mass 5 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 2 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 8
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. 200 m/s
C. 50 m/s
D. 20 m/s
Question 9
A gas occupies a volume of 2 L at a pressure of 1 atm. If the pressure is increased to 3 atm, what is the new volume of the gas?
A. 1 L
B. 2 L
C. 3 L
D. 4 L
Question 10
A 10 μF capacitor is connected in series with a 20 Ω resistor. If the frequency of the alternating current is 50 Hz, calculate the impedance of the circuit.
A. 20 Ω
B. 40 Ω
C. 60 Ω
D. 80 Ω
Question 11
A 2 kg block of copper is heated from 20°C to 80°C. If the specific heat capacity of copper is 0.385 J/g°C, calculate the energy required to heat the block.
A. 400 J
B. 800 J
C. 1200 J
D. 1600 J
Question 12
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 is subjected to a uniform magnetic field of 2 T directed perp\endicular to the plane of the circular path, what is the magnitude of the magnetic force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 13
A 5 kg block is moving on a frictionless surface with a speed of 10 m/s. If a force of 20 N is applied to the block in the direction of motion, what is the acceleration of the block?
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 5 m/s^2
Question 14
A radioactive sample has an initial activity of 100 Bq. If the half-life of the sample is 2 hours, what is the activity of the sample after 4 hours?
A. 50 Bq
B. 75 Bq
C. 87.5 Bq
D. 100 Bq
Question 15
A 100 μF capacitor is connected in parallel with a 20 Ω resistor. If the frequency of the alternating current is 50 Hz, calculate the impedance of the circuit.
A. 20 Ω
B. 40 Ω
C. 60 Ω
D. 80 Ω

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