POST UTME LEAD CITY UNIVERSITY 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If a potential difference of 10 V is applied across the plates, calculate the capaci\tance.
A. 2.5 x 10^-11 F
B. 5 x 10^-11 F
C. 1 x 10^-10 F
D. 2 x 10^-10 F
Question 2
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 centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 5.33 m/s^2
B. 6.66 m/s^2
C. 8 m/s^2
D. 10 m/s^2
Question 3
A light ray passes through a convex lens of focal length 20 cm. If the object dis\tance is 30 cm, what is the image dis\tance?
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
Question 4
A sound wave with frequency 200 Hz and amplitude 0.5 m is traveling through a medium with speed 343 m/s. What is the intensity of the sound wave?
A. 10^\( -3 \) W/m^2
B. 10^\( -2 \) W/m^2
C. 10^\( -1 \) W/m^2
D. 10^0 W/m^2
Question 5
A spring of force cons\tant 100 N/m is stretched by 2 m. What is the work done in stretching the spring?
A. 200 J
B. 400 J
C. 600 J
D. 800 J
Question 6
A beam of light is incident on a glass surface at an angle of 45°. If the angle of re\fraction is 30°, what is the re\fractive index of the glass?
A. 1.2
B. 1.5
C. 1.8
D. 2.0
Question 7
A 12 V battery is connected in series with a 10 Ω resistor. What is the current flowing through the circuit?
A. 1.2 A
B. 2 A
C. 3 A
D. 4 A
Question 8
A quantum particle of mass 1 kg is confined to a one-dimensional box of length 1 m. If the particle is in the ground state, determine the probability of finding the particle in the left half of the box.
A. 25%
B. 50%
C. 75%
D. 90%
Question 9
A parallel plate capacitor has a capaci\tance of 2.5 μF. If a potential difference of 10 V is applied across the plates, what is the charge stored on each plate?
A. 25 μC
B. 50 μC
C. 100 μC
D. 200 μC
Question 10
A particle of mass 1 kg is moving in a straight line with an initial velocity of 5 m/s. If a force of 2 N is applied in the opposite direction, calculate the acceleration after 2 seconds.
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 11
A 100 Ω resistor is connected in series with a 200 Ω resistor and a 50 Ω resistor. What is the total resis\tance?
A. 400 Ω
B. 450 Ω
C. 500 Ω
D. 550 Ω
Question 12
A lens of focal length 20 cm is used to form an image of an object placed 30 cm away. What is the magnification of the image?
A. 1/2
B. 2/3
C. 3/4
D. 4/5
Question 13
A ray of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.
A. 20°
B. 30°
C. 40°
D. 50°
Question 14
A 10 V battery is connected in series with a 20 Ω resistor and a 30 Ω resistor. What is the current in the circuit?
A. 0.5 A
B. 1 A
C. 1.5 A
D. 2 A
Question 15
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°

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