POST UTME VERITAS UNIVERSITY 2021 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. If the wave is traveling in the positive x-direction, what is the direction of the wave's velocity?
A. positive x-direction
B. negative x-direction
C. positive y-direction
D. negative y-direction
Question 2
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 is 10^-6 F, what is the charge stored on the capacitor when a potential difference of 10 V is applied across it?
A. 10^-8 C
B. 10^-7 C
C. 10^-6 C
D. 10^-5 C
Question 3
A 2.5 m long wire of resis\tance 3.0 Ω is stretched to a length of 5.0 m. Assuming the cross-sectional area remains cons\tant, calculate the new resis\tance of the wire.
A. 7.5 Ω
B. 10.0 Ω
C. 12.5 Ω
D. 15.0 Ω
Question 4
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?
A. 10^-5 C
B. 10^-6 C
C. 10^-7 C
D. 10^-8 C
Question 5
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 magnitude of the force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 6
A 2.0 kg object is moving in a circular path with a radius of 3.0 m at a speed of 4.0 m/s. Calculate the centripetal force acting on the object.
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 7
A radioactive sample has a half-life of 10 years. If the initial activity of the sample is 1000 Bq, what is the activity of the sample after 20 years?
A. 100 Bq
B. 200 Bq
C. 500 Bq
D. 1000 Bq
Question 8
A magnetic field of strength 0.5 T is directed along the z-axis. A current of 2 A flows in a wire loop of radius 0.1 m. What is the magnitude of the magnetic moment of the loop?
A. 0.1 A m^2
B. 0.2 A m^2
C. 0.3 A m^2
D. 0.4 A m^2
Question 9
A body of mass 5 kg is moving with a velocity of 10 m/s. What is its kinetic energy?
A. 250 J
B. 500 J
C. 750 J
D. 1000 J
Question 10
A wave has a frequency of 20 Hz and a wavelength of 0.5 m. If the wave is traveling in the positive x-direction, what is the direction of the particle velocity at x = 0.25 m?
A. Positive x-direction
B. Negative x-direction
C. Positive y-direction
D. Negative y-direction
Question 11
A 10 kg block is moving on a frictionless surface with a speed of 5 m/s. If the block is subjected to a force of 20 N, what is the acceleration of the block?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2
Question 12
A simple harmonic motion has a frequency of 10 Hz and an amplitude of 0.2 m. If the motion starts at its maximum displacement, what is the displacement of the particle at t = 0.1 s?
A. 0.1 m
B. 0.2 m
C. 0.3 m
D. 0.4 m
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 acceleration of the particle?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 14
A particle of mass 1 kg is moving in a circular path of radius 2 m with a cons\tant speed of 3 m/s. If the particle is subjected to a centripetal force of 6 N, what is the magnitude of the force?
A. 8 N
B. 10 N
C. 12 N
D. 15 N
Question 15
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?
A. 10 N
B. 12 N
C. 15 N
D. 20 N

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