POST UTME UNIPORT 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A body of mass 3 kg is moving with a velocity of 15 m/s. If it is subjected to a force of 30 N, what is the change in its kinetic energy?
A. 225 J
B. 300 J
C. 375 J
D. 450 J
Question 2
A capacitor consists of two parallel plates, each of area 0.04 m^2, separated by a dis\tance of 0.02 m. If the plates are charged to a potential difference of 12 V, what is the capaci\tance?
A. 0.02 F
B. 0.04 F
C. 0.06 F
D. 0.08 F
Question 3
A lens has a focal length of 20 cm. If an object is placed 30 cm in front of the lens, calculate the image dis\tance.
A. 10 cm
B. 20 cm
C. 30 cm
D. 40 cm
Question 4
A simple harmonic motion has a time period of 2 s. If the amplitude is 5 cm, calculate the maximum velocity.
A. 10 cm/s
B. 20 cm/s
C. 30 cm/s
D. 40 cm/s
Question 5
A light source is placed 2 m away from a convex lens of focal length 0.5 m. If the light source is moved 1 m closer to the lens, calculate the new image dis\tance.
A. 1 m
B. 2 m
C. 3 m
D. 4 m
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. What is the magnitude of the centripetal acceleration?
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 4 m/s^2
Question 7
A parallel plate capacitor has a capaci\tance of 10 μF. If the potential difference between the plates is 20 V, what is the charge stored on the capacitor?
A. 200 μC
B. 400 μC
C. 600 μC
D. 800 μC
Question 8
A heat engine operates between two temperatures of 300 K and 400 K. What is the efficiency of the engine?
A. 0.25
B. 0.33
C. 0.5
D. 0.67
Question 9
A wave function is given by \psi(x) = Ae^{-\frac{x^2}{2a^2}}. What is the probability of finding the particle between x = -a and x = a?
A. \frac{1}{2}
B. \frac{1}{4}
C. \frac{1}{8}
D. \frac{1}{16}
Question 10
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°, calculate the angle of emergence.
A. 20°
B. 30°
C. 45°
D. 60°
Question 11
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current in the circuit?
A. 0.25 A
B. 0.50 A
C. 1.00 A
D. 2.00 A
Question 12
A circuit consists of a 10 Ω resistor and a 20 μF capacitor in series. What is the time cons\tant of the circuit?
A. 0.2 s
B. 0.4 s
C. 0.6 s
D. 0.8 s
Question 13
A magnetic field is produced by a current-carrying wire. If the current is 5 A and the wire is 0.5 m long, what is the magnetic field strength at a point 0.2 m away from the wire?
A. 0.05 T
B. 0.1 T
C. 0.15 T
D. 0.2 T
Question 14
A lens has a focal length of 0.2 m. If an object is placed 0.3 m away from the lens, what is the image dis\tance?
A. 0.1 m
B. 0.2 m
C. 0.3 m
D. 0.4 m
Question 15
A wave function is given by \psi(x) = Ae^{-\frac{x^2}{2a^2}}. What is the probability of finding the particle between x = -a and x = a?
A. \frac{1}{2}
B. \frac{1}{4}
C. \frac{1}{8}
D. \frac{1}{16}

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