POST UTME CALEB UNIVERSITY 2017 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A wave with a frequency of 100 Hz and a wavelength of 1 m is traveling through a medium. If the wave is reflected from a fixed \end, what is the wavelength of the reflected wave?
A. 0.5 m
B. 1 m
C. 1.5 m
D. 2 m
Question 2
A wave has a frequency of 50 Hz and a wavelength of 2 m. If the wave is traveling in the positive x-direction, what is the direction of the particle velocity?
A. positive x-direction
B. negative x-direction
C. positive y-direction
D. negative y-direction
Question 3
A projectile is launched at an angle of 60° to the horizontal with an initial velocity of 20 m/s. Calculate the time of flight.
A. 2 s
B. 4 s
C. 6 s
D. 8 s
Question 4
A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length -15 cm. What is the focal length of the combination?
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
Question 5
A simple harmonic motion has a frequency of 2 Hz and an amplitude of 3 m. If the motion is at its maximum displacement at time t = 0, what is the equation of motion?
A. x(t) = 3 \sin\( 4\pi t \)
B. x(t) = 3 \sin\( 2\pi t \)
C. x(t) = 3 \sin\( 4\pi t + \pi/2 \)
D. x(t) = 3 \sin\( 2\pi t + \pi/2 \)
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. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 7
A 5 μF capacitor is connected in parallel with a 10 μF capacitor. What is the equivalent capaci\tance?
A. 5 μF
B. 10 μF
C. 15 μF
D. 20 μF
Question 8
A block of mass 5 kg is placed on a horizontal surface with a coefficient of friction of 0.5. If a horizontal force of 20 N is applied to the block, what is the acceleration of the block?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 9
A 2 mH inductor is connected in series with a 10 Ω resistor and a 120 V AC source. What is the impedance?
A. 10 Ω
B. 20 Ω
C. 30 Ω
D. 40 Ω
Question 10
A gas at 300 K expands from 1 L to 2 L against a cons\tant external pressure of 1 atm. What is the change in internal energy of the gas?
A. -100 J
B. 0 J
C. 100 J
D. 200 J
Question 11
A 50 Hz AC generator has an emf of 200 V. If the current drawn from the generator is 10 A, what is the power factor of the circuit?
A. 0.5
B. 0.8
C. 0.9
D. 0.95
Question 12
A 1000 Hz AC voltage source is connected to a 50 Ω resistor. If the maximum voltage is 100 V, what is the rms value of the current flowing through the resistor?
A. 0.5 A
B. 1 A
C. 2 A
D. 5 A
Question 13
A capacitor of capaci\tance 10 μF is charged to a potential difference of 5 V. Calculate the energy stored in the capacitor.
A. 50 μJ
B. 50 mJ
C. 50 J
D. 50 μA
Question 14
A 2 kg block is moving at 4 m/s on a frictionless surface when it collides with a stationary 1 kg block. If the collision is perfectly elastic, what is the velocity of the 2 kg block after the collision?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 15
A gas at 300 K and 1 atm expands isothermally to a volume of 10 L. What is the work done?
A. 100 J
B. 200 J
C. 300 J
D. 400 J

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