POST UTME BSU 2018 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 5 V is applied across the plates, calculate the charge stored on the capacitor.
A. 50 μC
B. 100 μC
C. 200 μC
D. 500 μC
Question 2
A particle of mass 0.5 kg is moving in a circular path of radius 2 m with a speed of 4 m/s. What is the magnitude of the centripetal force acting on the particle?
A. 2 N
B. 4 N
C. 6 N
D. 8 N
Question 3
A quantum particle is described by the wave function \psi(x) = Ae^{-\alpha x^2}. If the probability density of the particle is given by \rho(x) = |\psi(x)|^2, what is the value of the cons\tant \alpha?
A. 0.5
B. 1.0
C. 2.0
D. 5.0
Question 4
A parallel plate capacitor has a capaci\tance of 2.5 μF. If the potential difference between the plates is 10 V, what is the charge stored on the capacitor?
A. 25 μC
B. 50 μC
C. 100 μC
D. 200 μC
Question 5
A gas is confined to a container of volume 2 m^3 at a temperature of 300 K. If the gas is heated to a temperature of 400 K, what is the new volume of the gas?
A. 2.5 m^3
B. 3.0 m^3
C. 3.5 m^3
D. 4.0 m^3
Question 6
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 60° above the horizontal. If the acceleration due to gravity is 9.8 m/s^2, what is the maximum height reached by the projectile?
A. 15 m
B. 20 m
C. 25 m
D. 30 m
Question 7
A photon of energy 2.5 eV is incident on a metal surface with a work function of 1.5 eV. What is the maximum kinetic energy of the photoelectron?
A. 0.5 eV
B. 1 eV
C. 1.5 eV
D. 2 eV
Question 8
A block of mass 5 kg is placed on a horizontal surface. If a force of 10 N is applied to the block, calculate the acceleration of the block.
A. 0.5 m/s^2
B. 1.0 m/s^2
C. 2.0 m/s^2
D. 5.0 m/s^2
Question 9
A sound wave has a frequency of 200 Hz and a speed of 340 m/s. What is the wavelength of the wave?
A. 1.7 m
B. 1.8 m
C. 1.9 m
D. 2.0 m
Question 10
A heat engine operates between two reservoirs at temperatures 500 K and 300 K. If the engine receives 100 J of heat from the high-temperature reservoir, what is the efficiency of the engine?
A. 0.25
B. 0.33
C. 0.50
D. 0.67
Question 11
A particle of mass 0.5 kg is attached to a spring with spring cons\tant 100 N/m. It is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the angular frequency of the particle's motion.
A. 10 rad/s
B. 20 rad/s
C. 30 rad/s
D. 40 rad/s
Question 12
A gas is compressed from an initial volume of 10 L to a final volume of 5 L at a cons\tant temperature of 300 K. Calculate the work done on the gas.
A. -50 J
B. -100 J
C. -150 J
D. -200 J
Question 13
A 2 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. 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. 4.0 m/s
D. 8.0 m/s
Question 14
A light ray 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 15
A 2 kg object is moving in a circular path of radius 4 m with a cons\tant speed of 5 m/s. If the object is subjected to a centripetal acceleration of 3 m/s^2, what is the magnitude of the force acting on the object?
A. 20 N
B. 25 N
C. 30 N
D. 35 N

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