POST UTME UNIOSUN 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A radioactive sample has an initial activity of 100 Bq. After 2 hours, the activity decreases to 50 Bq. What is the half-life of the sample?
A. 1 hour
B. 2 hours
C. 3 hours
D. 4 hours
Question 2
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 20 V is applied across its plates, what is the magnitude of the displacement current?
A. \( 2 \times 10^{-6} , \text{A} \)
B. \( 4 \times 10^{-6} , \text{A} \)
C. \( 6 \times 10^{-6} , \text{A} \)
D. \( 8 \times 10^{-6} , \text{A} \)
Question 3
A light ray passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 25°
C. 30°
D. 35°
Question 4
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 acceleration of 2 m/s^2, what is the force exerted on the particle?
A. 10 N
B. 12 N
C. 8 N
D. 6 N
Question 5
A particle of mass 2 kg is attached to a spring with spring cons\tant 4 N/m. If the particle is displaced by 1 m from its equilibrium position and released from rest, determine the angular frequency of the resulting simple harmonic motion.
A. 1 rad/s
B. 2 rad/s
C. 3 rad/s
D. 4 rad/s
Question 6
A light ray passes through a prism of angle 60°. If the angle of incidence is 30°, what is the angle of deviation?
A. 30°
B. 40°
C. 50°
D. 60°
Question 7
A 12 V battery is connected to a 4 Ω resistor. What is the current flowing through the resistor?
A. 2 A
B. 3 A
C. 4 A
D. 6 A
Question 8
A 5 μF capacitor is connected in series with a 10 kΩ resistor. If a 10 V battery is connected across the circuit, what is the time cons\tant?
A. 0.5 s
B. 1 s
C. 2 s
D. 5 s
Question 9
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. 15 m
C. 20 m
D. 25 m
Question 10
A particle moves in a circular path with a cons\tant speed of 5 m/s. If the radius of the circle is 2 m, what is the magnitude of the acceleration?
A. 5 m/s^2
B. 10 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 11
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 10 V. If the dis\tance between the plates is doubled, what is the new potential difference?
A. 5 V
B. 10 V
C. 20 V
D. 40 V
Question 12
A 2 kg object is moving in a circular path with a radius of 3 m. If the object has a speed of 4 m/s, what is the centripetal acceleration?
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 4 m/s^2
Question 13
A photon has an energy of 2.5 eV. What is its wavelength?
A. 500 nm
B. 1000 nm
C. 2000 nm
D. 5000 nm
Question 14
A parallel plate capacitor consists of two plates, each of area 0.1 m^2, separated by a dis\tance of 0.01 m. If the capaci\tance is 10 nF, determine the potential difference between the plates when a charge of 5 μC is stored.
A. 0.5 V
B. 1 V
C. 2 V
D. 5 V
Question 15
A wave of frequency 100 Hz and wavelength 0.1 m is traveling through a medium. If the wave is reflected from a fixed \end, what is the frequency of the reflected wave?
A. 100 Hz
B. 200 Hz
C. 300 Hz
D. 400 Hz

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: