POST UTME GREENFIELD UNIVERSITY 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A wave function is given by ψ(x) = Ae^\( -αx^2 \). What is the probability density of the wave function?
A. |ψ(x)|^2 = Ae^{-2αx^2}
B. |ψ(x)|^2 = Ae^{-αx^2}
C. |ψ(x)|^2 = Ae^{αx^2}
D. |ψ(x)|^2 = Ae^{-2αx^2} + Ae^{2αx^2}
Question 2
A 2 kg block is moving in a straight line with an initial velocity of 4 m/s. If the block experiences a cons\tant acceleration of 2 m/s^2, calculate the time it takes for the block to reach a velocity of 6 m/s.
A. 1 s
B. 2 s
C. 3 s
D. 4 s
Question 3
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 subject to a centripetal acceleration of 2 m/s^2, calculate the force acting on the particle.
A. 8 N
B. 10 N
C. 12 N
D. 15 N
Question 4
A 10 μF capacitor is connected in series with a 20 Ω resistor and a 50 V battery. What is the current flowing through the circuit?
A. 0.25 A
B. 0.5 A
C. 1 A
D. 2 A
Question 5
A 100 W bulb is connected to a 220 V power supply. What is the current flowing through the bulb?
A. 0.4 A
B. 0.5 A
C. 0.6 A
D. 0.7 A
Question 6
A block of mass 5 kg is attached to a horizontal, massless spring with a force cons\tant of 200 N/m. The block is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, calculate the maximum speed of the block as it passes through the equilibrium position.
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 7
A 50 Hz AC generator produces an emf of 200 V. What is the maximum current drawn by a 100 Ω resistor connected across the generator?
A. 0.5 A
B. 1 A
C. 2 A
D. 5 A
Question 8
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. 25°
C. 30°
D. 35°
Question 9
A convex lens with a focal length of 20 cm is used to form an image of an object placed 30 cm away. What is the magnification of the image?
A. -0.5
B. -1
C. -1.5
D. -2
Question 10
A simple harmonic motion has a time period of 2 s and an amplitude of 3 m. What is the maximum acceleration of the particle?
A. 6 m/s^2
B. 12 m/s^2
C. 18 m/s^2
D. 24 m/s^2
Question 11
A particle of mass 1 kg is moving in a straight line with an initial velocity of 5 m/s. If the particle experiences a force of 10 N for 2 s, what is the final velocity of the particle?
A. 10 m/s
B. 15 m/s
C. 20 m/s
D. 25 m/s
Question 12
A 10 V battery is connected in series with a 5 Ω resistor and a 2 Ω resistor. If the current in the circuit is 1 A, calculate the voltage drop across the 5 Ω resistor.
A. 3 V
B. 5 V
C. 7 V
D. 10 V
Question 13
A gas expands from an initial volume of 2 L to a final volume of 5 L against an external pressure of 2 atm. What is the work done by the gas?
A. 10 J
B. 20 J
C. 30 J
D. 40 J
Question 14
A gas is confined to a cylinder 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 m^3
C. 3.5 m^3
D. 4 m^3
Question 15
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 subject to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 12 m/s^2
B. 16 m/s^2
C. 20 m/s^2
D. 24 m/s^2

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: