POST UTME WELLSPRING UNIVERSITY 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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 2
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 3
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 4
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 5
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 6
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 angular velocity of the particle?
A. \( \frac{2pi}{5} \) rad/s
B. \( \frac{2pi}{3} \) rad/s
C. \( \frac{2pi}{4} \) rad/s
D. \( \frac{2pi}{2} \) rad/s
Question 7
A beam of light is incident on a prism at an angle of 30°. If the re\fractive index of the prism is 1.5, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 8
A particle of mass 2.0 kg is moving in a circular path of radius 3.0 m with a cons\tant speed of 4.0 m/s. What is the magnitude of the centripetal force acting on the particle?
A. 1.0 N
B. 2.0 N
C. 3.0 N
D. 4.0 N
Question 9
A wave has a frequency of 100 Hz and a wavelength of 0.5 m. What is the speed of the wave?
A. 50 m/s
B. 100 m/s
C. 150 m/s
D. 200 m/s
Question 10
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 11
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 12
A radioactive sample has a half-life of 10 years. If the initial activity is 100 Bq, what is the activity after 20 years?
A. 12.5 Bq
B. 25 Bq
C. 50 Bq
D. 100 Bq
Question 13
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 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 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 15
A particle of mass 0.1 kg is moving in a circular path with a radius of 0.5 m. If the particle has a speed of 2 m/s, what is the magnitude of the centripetal acceleration?
A. 0.5 m/s²
B. 1 m/s²
C. 2 m/s²
D. 5 m/s²

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