POST UTME UNN 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 5 μF capacitor is connected in series with a 10 kΩ resistor and a 20 V battery. What is the time cons\tant of the circuit?
A. 0.1 s
B. 0.2 s
C. 0.5 s
D. 1 s
Question 2
A particle of mass 2 kg is moving in a circular path with a cons\tant speed of 4 m/s. The radius of the circle is 3 m. What is the magnitude of the centripetal acceleration of the particle?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 3
A 20 V battery is connected in series with a 5 Ω resistor and a 10 Ω resistor. What is the current flowing through the circuit?
A. 0.5 A
B. 1 A
C. 2 A
D. 3 A
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 centripetal acceleration of 2 m/s^2, what is the magnitude of the net force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 5
A block of mass 5 kg is placed on a frictionless surface and a horizontal force of 10 N is applied to it. If the block is displaced by 2 m, what is the work done on the block?
A. 20 J
B. 30 J
C. 40 J
D. 50 J
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 magnitude of the acceleration of the particle?
A. 8 m/s^2
B. 12 m/s^2
C. 16 m/s^2
D. 20 m/s^2
Question 7
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the total resis\tance of the circuit?
A. 10 Ω
B. 12 Ω
C. 14 Ω
D. 16 Ω
Question 8
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. 10 m
B. 20 m
C. 30 m
D. 40 m
Question 9
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 10
A block of mass 5 kg is attached to a spring with a spring cons\tant of 100 N/m. The block is displaced by 0.2 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 11
A block of copper with a mass of 2 kg is heated from 20°C to 80°C. If the specific heat capacity of copper is 0.385 J/g°C, what is the energy transferred to the block?
A. 200 J
B. 400 J
C. 600 J
D. 800 J
Question 12
A radioactive subs\tance has a half-life of 10 years. If the initial activity is 100 Bq, what is the activity after 20 years?
A. 25 Bq
B. 50 Bq
C. 75 Bq
D. 100 Bq
Question 13
A capacitor consists of two parallel plates, each of area 0.1 m^2, separated by a dis\tance of 0.01 m. If the capaci\tance of the capacitor is 10^-6 F, what is the charge stored on the capacitor when a potential difference of 100 V is applied across it?
A. 10^-5 C
B. 10^-4 C
C. 10^-3 C
D. 10^-2 C
Question 14
A capacitor consists of two parallel plates, each of area 0.1 m^2, separated by a dis\tance of 0.01 m. If the capaci\tance of the capacitor is 10^-6 F, what is the charge stored on the capacitor when a potential difference of 100 V is applied across it?
A. 10^-5 C
B. 10^-4 C
C. 10^-3 C
D. 10^-2 C
Question 15
A 10 V battery is connected in series with a 5 Ω resistor and a 10 Ω resistor. What is the current flowing through the circuit?
A. 0.5 A
B. 1 A
C. 2 A
D. 3 A

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: