POST UTME OSUSTECH 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A wave has a frequency of 50 Hz and a wavelength of 0.2 m. What is the speed of the wave?
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 2
A wave has a frequency of 50 Hz and a wavelength of 10 m. If the wave is traveling in the positive x-direction, what is the speed of the wave?
A. 250 m/s
B. 500 m/s
C. 750 m/s
D. 1000 m/s
Question 3
A particle of mass 1 kg is moving in a circular path with a cons\tant speed of 3 m/s. If the radius of the circle is 2 m, what is the magnitude of the particle's acceleration?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 4
A particle of mass 3 kg is moving in a circular path of radius 4 m with a cons\tant speed of 6 m/s. If the particle is subjected to a centripetal force of 18 N, what is the magnitude of the acceleration of the particle?
A. 12 m/s^2
B. 18 m/s^2
C. 24 m/s^2
D. 36 m/s^2
Question 5
A gas is enclosed in a container with a moveable piston. The gas is heated, cau\sing its pressure to increase. Which of the following best describes the change in the gas's internal energy?
A. The internal energy remains cons\tant.
B. The internal energy increases.
C. The internal energy decreases.
D. The internal energy becomes negative.
Question 6
A simple harmonic motion has a frequency of 2 Hz and an amplitude of 0.5 m. Calculate the angular frequency.
A. 4\pi rad/s
B. 6\pi rad/s
C. 8\pi rad/s
D. 10\pi rad/s
Question 7
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. What is the magnitude of the net force acting on the particle?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 8
A projectile is thrown with an initial velocity of 20 m/s at an angle of 60° to the horizontal. Calculate the time of flight.
A. 2 s
B. 3 s
C. 4 s
D. 5 s
Question 9
A 1000 Hz tuning fork is placed in a glass container filled with air. Calculate the frequency of the tuning fork.
A. 1000 Hz
B. 1200 Hz
C. 1400 Hz
D. 1600 Hz
Question 10
A 10 kg block is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 0.2 m from its equilibrium position, calculate the potential energy stored in the spring.
A. 2 J
B. 4 J
C. 6 J
D. 8 J
Question 11
A wave of wavelength $\lambda$ and frequency $f$ is traveling through a medium of speed $v$. If the wave is reflected from a fixed point, what is the speed of the reflected wave?
A. 2v
B. v
C. \frac{v}{2}
D. \frac{v}{\sqrt{2}}
Question 12
A block of mass 5 kg is placed on a frictionless surface and connected to a spring with a force cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position and released, what is the maximum speed of the block?
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 13
A ray of light passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.
A. 20°
B. 25°
C. 30°
D. 35°
Question 14
A parallel plate capacitor has plates of area $A$ and separation $d$. The capacitor is connected to a battery of voltage $V$. If the capacitor is then disconnected from the battery and a dielectric material of dielectric cons\tant $K$ is inserted between the plates, what is the new capaci\tance $C'$?
A. \frac{A\epsilon_0}{d}
B. \frac{KA\epsilon_0}{d}
C. \frac{A\epsilon_0}{dK}
D. \frac{KA\epsilon_0}{d^2}
Question 15
A particle of mass $m$ is moving in a simple harmonic motion with angular frequency $\omega$. If the particle's kinetic energy is $K$, what is its potential energy $U$?
A. \frac{1}{2}m\omega^2A^2
B. \frac{1}{2}m\omega^2A
C. \frac{1}{2}m\omega^2
D. \frac{1}{2}mA^2

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