POST UTME UNIPORT 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A circuit consists of a 12 Ω resistor, a 20 Ω resistor, and a 30 Ω resistor connected in series. If a voltage of 24 V is applied across the circuit, what is the current flowing through the 20 Ω resistor?
A. 0.5 A
B. 1 A
C. 2 A
D. 4 A
Question 2
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 3
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm in front of it. What is the magnification of the image?
A. 0.5
B. 1
C. 2
D. 3
Question 4
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 8.0 x 10^-10 F, what is the charge on the plates when the potential difference between them is 100 V?
A. 8.0 x 10^-8 C
B. 4.0 x 10^-8 C
C. 2.0 x 10^-8 C
D. 1.0 x 10^-8 C
Question 5
A particle of mass $m$ and energy $E$ is incident on a potential barrier of height $V_0$. If the particle is transmitted with probability $T$, what is the value of $V_0$?
A. \frac{E}{2} + \sqrt{E^2 - m^2 c^4}
B. \frac{E}{2} - \sqrt{E^2 - m^2 c^4}
C. \frac{E}{2} + \sqrt{m^2 c^4 - E^2}
D. \frac{E}{2} - \sqrt{m^2 c^4 - E^2}
Question 6
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. What is the magnitude of the force acting on the particle?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 7
A convex lens of focal length 20 cm forms an image of an object placed 30 cm in front of it. What is the magnification of the image?
A. 1/2
B. 2
C. -1/2
D. -2
Question 8
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. What is the magnitude of the centripetal acceleration?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 9
A point charge of +2 μC is placed at the origin. What is the electric potential at a point 0.5 m away from the charge?
A. 100 V
B. 200 V
C. 300 V
D. 400 V
Question 10
A wave has a frequency of 20 Hz and a wavelength of 0.5 m. What is the speed of the wave?
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 11
A 2 kg block of ice at 0°C is placed in a 10°C water bath. Assuming the specific heat capacity of ice is 2090 J/(kg°C) and the latent heat of fusion of ice is 334 kJ/kg, calculate the time it takes for the ice to melt completely.
A. 10 minutes
B. 20 minutes
C. 30 minutes
D. 40 minutes
Question 12
A beam of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 13
A particle of mass 2 kg is moving in a circular path of radius 3 m with a speed of 4 m/s. What is the magnitude of the force acting on the particle?
A. 12 N
B. 24 N
C. 48 N
D. 96 N
Question 14
A gas at a pressure of 1.5 atm and a temperature of 300 K is compressed to a volume of 0.5 L. What is the final pressure of the gas?
A. 3 atm
B. 6 atm
C. 9 atm
D. 12 atm
Question 15
A projectile is launched at an angle of 60° above the horizontal with an initial velocity of 20 m/s. What is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m

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