POST UTME NOUN 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A sound wave with a frequency of 200 Hz is emitted from a source moving towards a stationary observer. If the speed of sound in air is 343 m/s, what is the apparent frequency heard by the observer?
A. 220 Hz
B. 240 Hz
C. 260 Hz
D. 280 Hz
Question 2
A 10 kg block is moving at a speed of 5 m/s on a frictionless surface. Calculate the work done by a 5 N force applied in the direction of motion.
A. 25 J
B. 50 J
C. 75 J
D. 100 J
Question 3
A voltage $V$ is applied across a resistor $R$. What is the current flowing through the resistor?
A. \frac{V}{R}
B. RV
C. \frac{R}{V}
D. \frac{V^2}{R}
Question 4
A capacitor of capaci\tance 10 μF is connected in series with a resistor of resis\tance 20 Ω. If a voltage of 50 V is applied across the circuit, what is the current flowing through the circuit?
A. 1.5 A
B. 2.5 A
C. 3.5 A
D. 4.5 A
Question 5
A \tank is filled with water to a height of 5 m. If a hole of area 0.01 m^2 is made at the bottom of the \tank, what is the rate of flow of water out of the \tank?
A. 0.1 m^3/s
B. 0.2 m^3/s
C. 0.3 m^3/s
D. 0.4 m^3/s
Question 6
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 12 V is applied across the plates, what is the charge stored on the capacitor?
A. 120 μC
B. 140 μC
C. 160 μC
D. 180 μC
Question 7
A parallel plate capacitor has plates of area 0.05 m^2 and separation 0.005 m. The capaci\tance is 10 nF. If a potential difference of 50 V is applied across the plates, calculate the energy stored in the capacitor.
A. 0.125 J
B. 1.25 J
C. 12.5 J
D. 125 J
Question 8
A wire of resis\tance 10 ohms is connected in series with a 20 ohm resistor and a 30 ohm resistor. What is the total resis\tance?
A. 60 ohms
B. 70 ohms
C. 80 ohms
D. 90 ohms
Question 9
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. 4 m/s^2
B. 6 m/s^2
C. 8 m/s^2
D. 10 m/s^2
Question 10
A 2 kg block is attached to a horizontal, massless 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. Assuming the block undergoes simple harmonic motion, calculate the maximum potential energy of the block.
A. 10 J
B. 20 J
C. 30 J
D. 40 J
Question 11
A 100 W light bulb is connected to a 120 V power source. Calculate the resis\tance of the bulb.
A. 10 Ω
B. 20 Ω
C. 30 Ω
D. 40 Ω
Question 12
A ray of light passes from air into a glass block with a re\fractive index of 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 13
A uniform magnetic field of 2 T is applied to a coil of wire with 50 turns. The coil has a radius of 0.05 m and a resis\tance of 10 Ω. If the current in the coil is 2 A, what is the induced emf?
A. 0.1 V
B. 0.2 V
C. 0.5 V
D. 1 V
Question 14
A radioactive sample has a half-life of 5 years. If the initial activity of the sample is 100 Bq, what is the activity of the sample after 10 years?
A. 12.5 Bq
B. 25 Bq
C. 50 Bq
D. 100 Bq
Question 15
A 5 μF capacitor is connected in series with a 10 kΩ resistor and a 20 V battery. Calculate the charge stored on the capacitor.
A. 0.1 C
B. 0.2 C
C. 0.5 C
D. 1 C

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