POST UTME VERITAS UNIVERSITY 2018 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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. 10 m/s^2
B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 2
A uniform magnetic field of magnitude 2 T is directed along the z-axis. A current of 5 A flows in a circular loop of radius 0.1 m, placed in the x-y plane. What is the magnitude of the magnetic moment of the loop?
A. 0.1 A m^2
B. 0.5 A m^2
C. 1 A m^2
D. 5 A m^2
Question 3
A nucleus of mass number $A$ and atomic number $Z$ undergoes \beta decay. What is the resulting nucleus's mass number?
A. A
B. A-1
C. A+1
D. A-2
Question 4
A simple harmonic motion has a frequency of 2 Hz and an amplitude of 5 m. If the initial phase angle is 30°, what is the equation of motion for the particle?
A. x(t) = 5 \cdot \sin\( 4 \pi t + \frac{\pi}{6} \)
B. x(t) = 5 \cdot \sin\( 4 \pi t - \frac{\pi}{6} \)
C. x(t) = 5 \cdot \cos\( 4 \pi t + \frac{\pi}{6} \)
D. x(t) = 5 \cdot \cos\( 4 \pi t - \frac{\pi}{6} \)
Question 5
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. 30°
C. 40°
D. 50°
Question 6
A 1000 Hz AC supply is connected to a 10 μF capacitor. What is the reac\tance of the capacitor?
A. 10 Ω
B. 20 Ω
C. 50 Ω
D. 100 Ω
Question 7
A particle of mass $m$ is moving in a circular orbit of radius $r$ under the influence of a central force given by $F(r) = \frac{k}{r^2}$. If the particle's speed is $v$, what is its angular momentum?
A. \frac{mv}{k}
B. \frac{mv^2}{k}
C. \frac{mv^2r}{k}
D. \frac{mv^3}{k}
Question 8
A capacitor consists of two parallel plates separated by a dis\tance of 0.01 m. If the capaci\tance is 10^-6 F and the voltage across the capacitor is 10 V, what is the charge stored on the capacitor?
A. 0.01 C
B. 0.02 C
C. 0.03 C
D. 0.04 C
Question 9
A particle of mass 0.5 kg is moving in a circular path of radius 2 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 10 N, what is the magnitude of the force?
A. 5 N
B. 10 N
C. 15 N
D. 20 N
Question 10
A convex lens has a focal length of 10 cm and is used to form an image of an object placed 20 cm in front of it. What is the magnification of the lens?
A. 0.5
B. 1
C. 2
D. 3
Question 11
A force of 20 N acts on an object, cau\sing it to accelerate at 2 m/s^2. What is the object's mass?
A. 5 kg
B. 10 kg
C. 20 kg
D. 50 kg
Question 12
A block of mass 2 kg is placed on a frictionless surface and 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 and released from rest, what is the maximum speed of the block?
A. 0.5 m/s
B. 1 m/s
C. 1.5 m/s
D. 2 m/s
Question 13
A block of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. If the block is displaced by 0.1 m from its equilibrium position and released, what is the maximum velocity of the block?
A. 0.5 m/s
B. 1 m/s
C. 1.5 m/s
D. 2 m/s
Question 14
A particle of mass 2 kg is moving in a circular path of radius 3 m with a speed of 4 m/s. What is the centripetal acceleration?
A. 0.5 m/s^2
B. 1.0 m/s^2
C. 2.0 m/s^2
D. 4.0 m/s^2
Question 15
A particle of mass 0.5 kg is moving in a circular path of radius 2 m with a cons\tant speed of 4 m/s. What is the magnitude of the force acting on the particle?
A. 2 N
B. 4 N
C. 6 N
D. 8 N

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