POST UTME OSUSTECH 2021 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A block of mass 5 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 2 m from its equilibrium position and released, what is the maximum speed of the block?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 2
A capacitor consists of two parallel plates, each of area 0.04 m^2, separated by a dis\tance of 0.02 m. If the dielectric cons\tant of the material between the plates is 3, calculate the capaci\tance.
A. 1.6 x 10^-10 F
B. 3.2 x 10^-10 F
C. 4.8 x 10^-10 F
D. 6.4 x 10^-10 F
Question 3
A light source is placed 2 m away from a convex lens of focal length 0.5 m. If the source is moved 1 m closer to the lens, what is the new image dis\tance?
A. 1.5 m
B. 2 m
C. 2.5 m
D. 3 m
Question 4
A capacitor consists of two parallel plates, each of area 0.02 m^2, separated by a dis\tance of 0.01 m. If the dielectric cons\tant of the material between the plates is 2, calculate the capaci\tance.
A. 1.6 x 10^-11 F
B. 3.2 x 10^-11 F
C. 4.8 x 10^-11 F
D. 6.4 x 10^-11 F
Question 5
A wave of frequency 50 Hz and wavelength 10 m is propagating through a medium. If the amplitude of the wave is 0.05 m, calculate the intensity of the wave.
A. 1.25 x 10^-3 W/m^2
B. 2.5 x 10^-3 W/m^2
C. 3.75 x 10^-3 W/m^2
D. 5 x 10^-3 W/m^2
Question 6
A 10 Ω resistor is connected in series with a 20 Ω resistor. If a 12 V battery is connected across the combination, what is the current flowing through the 10 Ω resistor?
A. 0.4 A
B. 0.6 A
C. 0.8 A
D. 1.2 A
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. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 8 m/s^2
B. 12 m/s^2
C. 16 m/s^2
D. 20 m/s^2
Question 8
A 1000 Hz tuning fork is placed in a stationary air column. If the air column is 50 cm long, what is the wavelength of the sound wave produced?
A. 0.343 m
B. 0.343 cm
C. 3.43 m
D. 34.3 cm
Question 9
A particle of mass 1 kg is moving in a straight line with a velocity of 5 m/s. If the particle is subject to a force of 2 N, calculate the acceleration of the particle.
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 10
A 100 W light bulb is connected to a 220 V power source. If the bulb is switched on for 5 hours, how much energy is consumed?
A. 2500 J
B. 5000 J
C. 7500 J
D. 10000 J
Question 11
A 5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. If the block is displaced by 2 m from its equilibrium position and released, what is the maximum kinetic energy of the block?
A. 200 J
B. 400 J
C. 600 J
D. 800 J
Question 12
A light ray 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. 25°
C. 30°
D. 35°
Question 13
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 force required to stop the particle in 2 seconds?
A. 24 N
B. 30 N
C. 36 N
D. 48 N
Question 14
A particle of mass 2 kg is moving in a circular path with a cons\tant speed of 4 m/s. If the radius of the path is 3 m, calculate the magnitude of the centripetal acceleration.
A. 10 m/s^2
B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 15
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the circuit?
A. 1.5 A
B. 2 A
C. 2.5 A
D. 3 A

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