POST UTME WELLSPRING UNIVERSITY 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A circuit consists of a 10 Ω resistor, a 20 Ω resistor, and a 5 Ω resistor connected in series. If a voltage of 12 V is applied across the circuit, what is the current flowing through the circuit?
A. 0.5 A
B. 1 A
C. 2 A
D. 3 A
Question 2
A light ray passes through a prism and is re\fracted. If the angle of incidence is 30° and the angle of re\fraction is 20°, what is the angle of deviation?
A. 10°
B. 20°
C. 30°
D. 40°
Question 3
A gas expands from an initial volume of 0.1 m^3 to a final volume of 0.5 m^3. If the initial pressure is 100 kPa, calculate the final pressure.
A. 20 kPa
B. 50 kPa
C. 100 kPa
D. 200 kPa
Question 4
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 5
A parallel plate capacitor has plates of area 0.04 m^2 and separation 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^-9 F
B. 3.2 x 10^-9 F
C. 4.8 x 10^-9 F
D. 6.4 x 10^-9 F
Question 6
A uniform electric field of magnitude 2.0 x 10^4 N/C is directed along the positive x-axis. A point charge of +3.0 μC is placed at the origin. What is the magnitude of the electric force acting on the charge?
A. 6.0 x 10^-3 N
B. 6.0 x 10^-2 N
C. 6.0 x 10^-1 N
D. 6.0 x 10^1 N
Question 7
A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. Calculate the speed of the sound wave.
A. 100 m/s
B. 200 m/s
C. 300 m/s
D. 400 m/s
Question 8
A gas is enclosed in a container of volume 2.5 m³ at a temperature of 300 K. If the pressure of the gas is 1.5 atm, what is the number of moles of the gas present, assuming ideal gas behavior?
A. 0.05 mol
B. 0.1 mol
C. 0.15 mol
D. 0.2 mol
Question 9
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 5 V is applied across the plates, what is the energy stored in the capacitor?
A. 0.5 J
B. 1 J
C. 2 J
D. 5 J
Question 10
A particle of mass 2 kg is attached to a spring with spring cons\tant 100 N/m. If the particle is displaced by 0.1 m from its equilibrium position and released from rest, calculate the total energy of the particle.
A. 1 J
B. 2 J
C. 5 J
D. 10 J
Question 11
A beam of light is incident on a glass surface at an angle of 30°. If the re\fractive index of the glass is 1.5, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 12
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 9 N, what is the magnitude of 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 13
A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length -15 cm. What is the focal length of the combination?
A. 10 cm
B. 15 cm
C. 20 cm
D. 30 cm
Question 14
A block of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. Calculate the frequency of oscillation.
A. 1.59 Hz
B. 1.79 Hz
C. 1.99 Hz
D. 2.19 Hz
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 acceleration of the particle?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2

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