POST UTME KSU 2025 Physics | Objective

Prepare for your exams with POST UTME KSU questions? Reviewing past/model questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2025 Physics (Objective) questions designed to simulate the real exam environment.

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Question 1 View Details
A particle of mass $m$ and charge $q$ is moving in a circular path of radius $r$ in a uniform magnetic field of strength $B$. If the particle's speed is $v$, what is the magnitude of the magnetic field?
A. B = \frac{mv}{qr}
B. B = \frac{q}{mr}
C. B = \frac{r}{mv}
Correct D. B = \frac{mv}{qr}

Correct Answer: D

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Question 2 View Details
A wave has a frequency of 100 Hz and a wavelength of 0.2 m. What is the speed of the wave?
A. v = 20 m/s
B. v = 100 m/s
Correct C. v = 200 m/s
D. v = 500 m/s

Correct Answer: C

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Question 3 View Details
A circuit consists of a resistor of 10 Ω and an inductor of 5 H in series. If the voltage source is 20 V, what is the current in the circuit?
A. I = 0.5 A
B. I = 1 A
Correct C. I = 2 A
D. I = 5 A

Correct Answer: C

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Question 4 View Details
A particle of mass 2 kg is moving in a circular path of radius 5 m with a speed of 10 m/s. What is the magnitude of the centripetal force?
A. F_c = 10 N
B. F_c = 20 N
Correct C. F_c = 50 N
D. F_c = 100 N

Correct Answer: C

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Question 5 View Details
A wave has a frequency of 50 Hz and a wavelength of 0.5 m. What is the speed of the wave?
A. v = 25 m/s
Correct B. v = 50 m/s
C. v = 100 m/s
D. v = 200 m/s

Correct Answer: B

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Question 6 View Details
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 subject to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 8 m/s^2
Correct B. 12 m/s^2
C. 16 m/s^2
D. 20 m/s^2

Correct Answer: B

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Question 7 View Details
A capacitor consists of two parallel plates, each of area 0.1 m^2, separated by a dis\tance of 0.01 m. If the capaci\tance of the capacitor is 10^-6 F, what is the charge stored on the capacitor when a potential difference of 10 V is applied across it?
Correct A. 10^-5 C
B. 10^-6 C
C. 10^-7 C
D. 10^-8 C

Correct Answer: A

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Question 8 View Details
A wave of frequency 100 Hz and amplitude 0.1 m is traveling through a medium with a speed of 300 m/s. If the wave is reflected from a fixed \end, what is the amplitude of the reflected wave?
A. 0.1 m
B. 0.05 m
C. 0.01 m
Correct D. 0 m

Correct Answer: D

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Question 9 View Details
A resistor of resis\tance 10 ohms is connected in series with a capacitor of capaci\tance 10^-6 F. If an alternating current of frequency 100 Hz is applied across the circuit, what is the impedance of the circuit?
A. 10 ohms
B. 20 ohms
Correct C. 30 ohms
D. 40 ohms

Correct Answer: C

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Question 10 View Details
A radioactive sample decays at a rate of 10^-6 per second. If the initial number of atoms in the sample is 10^20, what is the number of atoms remaining after 10 seconds?
A. 10^19
Correct B. 10^18
C. 10^17
D. 10^16

Correct Answer: B

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