POST UTME UNIPORT 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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 2
A radioactive sample of uranium-238 undergoes \alpha decay, emitting an \alpha particle. If the initial mass of the uranium-238 nucleus is 238 u, what is the mass of the resulting thorium-234 nucleus?
A. 234 u
B. 238 u
C. 242 u
D. 246 u
Question 3
A nucleus of mass number $A$ and atomic number $Z$ undergoes \beta decay, emitting a \beta particle of energy $E$. What is the kinetic energy of the recoiling nucleus?
A. E
B. 2E
C. E + \frac{m_e c^2}{2}
D. E + m_e c^2
Question 4
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 centripetal acceleration?
A. 1 m/s^2
B. 2 m/s^2
C. 4 m/s^2
D. 6 m/s^2
Question 5
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 6
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 7
A wave has a frequency of 50 Hz and a wavelength of 2 m. What is its speed?
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 8
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 9
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 10
A point charge of +2 μC is placed at the origin of a coordinate system. A second point charge of -3 μC is placed at a dis\tance of 0.5 m from the origin. What is the magnitude of the electric field at a point 0.2 m from the origin?
A. 100 N/C
B. 200 N/C
C. 300 N/C
D. 400 N/C
Question 11
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 12
A wave function is given by ψ(x) = Ae^(ikx). What is the momentum of the particle described by this wave function?
A. 1 kg m/s
B. 2 kg m/s
C. 3 kg m/s
D. 4 kg m/s
Question 13
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 14
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 15
A 2 μF capacitor is connected in series with a 4 Ω resistor and a 10 V battery. If the capacitor is initially uncharged, what is the maximum current in the circuit?
A. 0.5 A
B. 1 A
C. 2 A
D. 5 A

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: