POST UTME WELLSPRING UNIVERSITY 2018 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A wave has a frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
A. 500 m/s
B. 1000 m/s
C. 2000 m/s
D. 5000 m/s
Question 2
A circuit consists of a 100 Ω resistor, a 200 Ω resistor, and a 20 V battery. If the current through the 100 Ω resistor is 0.2 A, what is the current through the 200 Ω resistor?
A. 0.1 A
B. 0.2 A
C. 0.3 A
D. 0.4 A
Question 3
A gas occupies a volume of 2.5 L at a pressure of 1.5 atm and a temperature of 300 K. Calculate the new volume if the pressure is increased to 3.0 atm and the temperature is decreased to 200 K.
A. 2.5 L
B. 3.0 L
C. 3.75 L
D. 4.5 L
Question 4
A body of mass 5 kg is moving with a velocity of 10 m/s. What is its kinetic energy?
A. 50 J
B. 100 J
C. 200 J
D. 500 J
Question 5
A magnetic field of 0.5 T is applied to a coil of 100 turns and radius 0.05 m. What is the induced emf?
A. -0.01 V
B. -0.1 V
C. -0.5 V
D. -1 V
Question 6
A body of mass 5 kg is moving with a velocity of 10 m/s. If it is subjected to a force of 20 N, what is the acceleration of the body?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 7
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 20 V is applied across its plates, calculate the charge stored on each plate.
A. 0.2 C
B. 0.4 C
C. 0.6 C
D. 0.8 C
Question 8
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm in front of it. Calculate the magnification of the image.
A. -0.5
B. -1
C. -1.5
D. -2
Question 9
A wave has a frequency of 100 Hz and a wavelength of 0.1 m. What is the speed of the wave?
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 10
A wave has a frequency of 50 Hz and a wavelength of 0.2 m. What is the speed of the wave?
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 11
A current of 2 A flows through a wire of resis\tance 10 Ω. What is the power dissipated in the wire?
A. 20 W
B. 40 W
C. 60 W
D. 80 W
Question 12
A current of 2 A flows through a resistor of 4 Ω. Calculate the power dissipated in the resistor.
A. 4 W
B. 8 W
C. 12 W
D. 16 W
Question 13
A 2 kg block is moving with a velocity of 5 m/s. If the block is brought to rest in 2 seconds, what is the force applied to it?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 14
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. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 15
A circuit consists of a 10 Ω resistor and a 20 Ω resistor in series. If a current of 2 A flows through the circuit, what is the voltage across the 20 Ω resistor?
A. 20 V
B. 40 V
C. 60 V
D. 80 V

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