POST UTME BOWEN UNIVERSITY 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A beam of light is incident on a prism of angle 30°. If the angle of incidence is 20°, calculate the angle of re\fraction.
A. 10°
B. 20°
C. 30°
D. 40°
Question 2
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 angle between the velocity vector and the radius vector at the ins\tant the particle is at the top of its path?
A. 30°
B. 45°
C. 60°
D. 90°
Question 3
A simple harmonic motion has a maximum displacement of 5 m and a period of 2 s. What is the angular frequency?
A. 1.57 rad/s
B. 3.14 rad/s
C. 4.71 rad/s
D. 6.28 rad/s
Question 4
A gas occupies a volume of 2 L at a pressure of 1 atm. If the temperature is increased to 300 K, what is the new volume of the gas?
A. 2.5 L
B. 3.0 L
C. 3.5 L
D. 4.0 L
Question 5
A vector \vec{A} has magnitude 5.0 m and direction 30° north of east. If a second vector \vec{B} has magnitude 3.0 m and direction 60° south of west, what is the magnitude of the resul\tant vector \vec{A} + \vec{B}?
A. 4.0 m
B. 5.0 m
C. 6.0 m
D. 7.0 m
Question 6
A sound wave with frequency 200 Hz and amplitude 0.5 m is traveling through a medium with speed 340 m/s. If the wave is reflected off a wall, what is the amplitude of the reflected wave?
A. 0.25 m
B. 0.5 m
C. 0.75 m
D. 1.0 m
Question 7
A photon of energy 2.5 eV is incident on a metal surface. If the work function of the metal is 1.5 eV, calculate the kinetic energy of the electron emitted.
A. 1 eV
B. 1.5 eV
C. 2 eV
D. 2.5 eV
Question 8
A ray of light passes through a prism and is re\fracted at an angle of 30°. If the angle of incidence is 20°, what is the angle of emergence?
A. 10°
B. 20°
C. 30°
D. 40°
Question 9
A 100 V AC supply is connected to a 50 Ω resistor. What is the current drawn?
A. 0.5 A
B. 1 A
C. 2 A
D. 5 A
Question 10
A block of mass 2 kg is susp\ended from a spring with spring cons\tant 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. 1.0 m/s
B. 2.0 m/s
C. 3.0 m/s
D. 4.0 m/s
Question 11
A gas is enclosed in a container with a movable piston. The gas is heated at cons\tant pressure. Which of the following statements is true?
A. The volume of the gas increases exponentially with temperature.
B. The volume of the gas increases linearly with temperature.
C. The volume of the gas remains cons\tant with temperature.
D. The volume of the gas decreases exponentially with temperature.
Question 12
A particle moves in a circular path with a cons\tant speed of 5 m/s. If the radius of the circle is 2 m, what is the magnitude of the acceleration of the particle?
A. 1.0 m/s^2
B. 2.0 m/s^2
C. 3.0 m/s^2
D. 4.0 m/s^2
Question 13
A capacitor of capaci\tance 2 μF is connected in series with a resistor of resis\tance 10 kΩ. If a voltage of 12 V is applied across the circuit, calculate the current flowing through the circuit.
A. 1.2 mA
B. 1.2 μA
C. 1.2 A
D. 1.2 kA
Question 14
A particle moves in a circular path with a radius of 2 m. If the angular velocity is 10 rad/s, what is the linear velocity?
A. 20 m/s
B. 30 m/s
C. 40 m/s
D. 50 m/s
Question 15
A 10 kg block is placed on a frictionless surface and a horizontal force of 20 N is applied to it. What is the acceleration of the block?
A. 1.0 m/s^2
B. 2.0 m/s^2
C. 3.0 m/s^2
D. 4.0 m/s^2

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