POST UTME PAN-ATLANTIC UNIVERSITY 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A capacitor consists of two parallel plates separated by a dis\tance of 1 mm. If the capaci\tance is 10 nF, calculate the charge stored when a potential difference of 5 V is applied across the plates.
A. 50 nC
B. 100 nC
C. 200 nC
D. 500 nC
Question 2
A gas expands from 1 L to 2 L against an external pressure of 2 atm. If the initial temperature is 300 K, what is the final temperature?
A. 200 K
B. 300 K
C. 400 K
D. 500 K
Question 3
A magnetic field is produced by a current-carrying wire. The wire is 1 m long and carries a current of 2 A. What is the magnitude of the magnetic field at a dis\tance of 0.5 m from the wire?
A. 0.1 T
B. 0.2 T
C. 0.3 T
D. 0.4 T
Question 4
A uniform magnetic field of magnitude 2 T is directed along the positive z-axis. A current of 5 A flows in a circular loop of radius 0.1 m, placed in the x-y plane. What is the magnitude of the magnetic moment of the loop?
A. 0.5 A m^2
B. 0.1 A m^2
C. 1 A m^2
D. 5 A m^2
Question 5
A gas is heated from 20°C to 80°C. What is the change in temperature?
A. 10°C
B. 20°C
C. 30°C
D. 40°C
Question 6
A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. If a 12 V battery is connected across the circuit, what is the current flowing through the 10 Ω resistor?
A. 0.4 A
B. 0.6 A
C. 0.8 A
D. 1.2 A
Question 7
A circuit consists of a 10 Ω resistor, a 20 Ω resistor, and a 5 Ω resistor connected in series. A 12 V battery is connected across the circuit. What is the current flowing through the 5 Ω resistor?
A. 0.4 A
B. 0.6 A
C. 0.8 A
D. 1.2 A
Question 8
A heat engine operates between 500 K and 300 K. If the efficiency is 30%, calculate the maximum work output.
A. 1000 J
B. 2000 J
C. 3000 J
D. 4000 J
Question 9
A sound wave with a frequency of 200 Hz has a speed of 340 m/s. What is the wavelength of the sound wave?
A. 1.5 m
B. 1.7 m
C. 2 m
D. 2.5 m
Question 10
A block of mass 5 kg is susp\ended from a spring with a spring cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position, what is the magnitude of the force exerted by the spring on the block?
A. 10 N
B. 20 N
C. 40 N
D. 80 N
Question 11
A wave has a frequency of 50 Hz and a wavelength of 0.2 m. If the wave is traveling in the positive x-direction, what is the direction of the wave's velocity?
A. Positive x-direction
B. Negative x-direction
C. Positive y-direction
D. Negative y-direction
Question 12
A block of mass 2 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. The block is displaced by 0.2 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 13
A particle of mass 1 kg is confined to a one-dimensional box of length 1 m. If the particle is in the ground state, what is the energy of the particle?
A. 1.5 J
B. 3 J
C. 4.5 J
D. 6 J
Question 14
A heat engine operates between two temperatures of 500 K and 300 K. If the engine has an efficiency of 30%, what is the temperature of the hot reservoir?
A. 400 K
B. 500 K
C. 600 K
D. 700 K
Question 15
A particle of mass 2 kg is moving in a circular path with a radius of 3 m and a speed of 4 m/s. What is the centripetal force acting on the particle?
A. 8 N
B. 12 N
C. 16 N
D. 20 N

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