POST UTME EKSU 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the circuit?
A. 1.5 A
B. 2.0 A
C. 2.5 A
D. 3.0 A
Question 2
A current of 5 A flows through a resistor of 10 Ω. Calculate the power dissipated by the resistor.
A. 25 W
B. 50 W
C. 75 W
D. 100 W
Question 3
A parallel plate capacitor has plates of area 0.1 m^2 and separation 0.01 m. If the capaci\tance is 10 nF, what is the value of the dielectric cons\tant?
A. 1.0
B. 2.0
C. 3.0
D. 4.0
Question 4
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 uniform magnetic field of 2 T, what is the magnitude of the magnetic force acting on the particle?
A. 8 N
B. 12 N
C. 16 N
D. 20 N
Question 5
A 2 kg object is moving in a circular path with a radius of 3 m. If the object's speed is 15 m/s, calculate the centripetal force.
A. 30 N
B. 60 N
C. 90 N
D. 120 N
Question 6
A particle of mass 2 kg is projected from the origin with an initial velocity of 20 m/s at an angle of 60° above the horizontal. Assuming the acceleration due to gravity is 9.8 m/s², calculate the time taken for the particle to reach its maximum height.
A. 1.5 s
B. 2.0 s
C. 2.5 s
D. 3.0 s
Question 7
A block of mass 5 kg is placed on a horizontal surface. A horizontal force of 20 N is applied to the block. If the coefficient of kinetic friction between the block and the surface is 0.2, calculate the acceleration of the block.
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 3 m/s^2
Question 8
A 5 kg object is moving in a straight line with a velocity of 10 m/s. If the object experiences a force of 20 N, calculate the acceleration.
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 9
A capacitor consists of two parallel plates, each of area 0.01 m^2, separated by a dis\tance of 0.001 m. The dielectric cons\tant of the material between the plates is 2. Calculate the capaci\tance of the capacitor.
A. 8.85 x 10^-11 F
B. 1.77 x 10^-10 F
C. 3.54 x 10^-10 F
D. 7.08 x 10^-10 F
Question 10
A wave of amplitude 0.5 m and frequency 5 Hz is traveling along a string. Calculate the wavelength of the wave.
A. 0.1 m
B. 0.2 m
C. 0.3 m
D. 0.4 m
Question 11
A light ray passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 25°
C. 30°
D. 35°
Question 12
A wave of wavelength 2 m and frequency 5 Hz is traveling along a string. Calculate the speed of the wave.
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
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 40°, what is the angle of deviation?
A. 10°
B. 20°
C. 30°
D. 40°
Question 14
A light ray passes through a prism of angle 60° and is re\fracted at an angle of 30°. If the angle of incidence is 45°, what is the angle of emergence?
A. 60°
B. 70°
C. 80°
D. 90°
Question 15
A beam of light passes from air into a medium 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°

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