POST UTME PAN-ATLANTIC UNIVERSITY 2017 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A magnetic field of strength 0.5 T is perp\endicular to a current-carrying wire of length 2 m. What is the magnitude of the force on the wire?
A. 0.5 N
B. 1 N
C. 2 N
D. 5 N
Question 2
A radioactive subs\tance has a half-life of 2 years. If 100 g of the subs\tance is initially present, how much of the subs\tance will remain after 6 years?
A. 12.5 g
B. 25 g
C. 37.5 g
D. 50 g
Question 3
A 100 W light bulb is connected to a 220 V power source. What is the current drawn by the bulb?
A. 0.4 A
B. 0.5 A
C. 0.6 A
D. 0.7 A
Question 4
A projectile is launched at an angle of 30° above the horizontal with an initial velocity of 20 m/s. What is the maximum height reached by the projectile?
A. 5 m
B. 10 m
C. 15 m
D. 20 m
Question 5
A uniform magnetic field of strength 2 T is applied to a coil of wire with 100 turns. If the coil is rotated by 90° about an axis perp\endicular to the magnetic field, what is the induced emf in the coil?
A. 10 V
B. 20 V
C. 40 V
D. 80 V
Question 6
A capacitor is connected to a 12 V power source. If the capaci\tance is 2 μF, what is the charge stored on the capacitor?
A. 24 μC
B. 48 μC
C. 72 μC
D. 96 μC
Question 7
A heat engine operates on a Carnot cycle between two temperatures of 300 K and 400 K. If the engine absorbs 1000 J of heat from the high-temperature reservoir, what is the efficiency of the engine?
A. 0.25
B. 0.33
C. 0.5
D. 0.67
Question 8
A particle of mass 2.00 kg is moving in a circular path with a radius of 3.00 m. If the particle has a speed of 4.00 m/s, what is the centripetal acceleration?
A. 0.800 m/s^2
B. 1.00 m/s^2
C. 1.25 m/s^2
D. 1.60 m/s^2
Question 9
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 10
A 100 Ω resistor is connected in series with a 10 μF capacitor. If the capacitor is charged to a potential difference of 10 V, what is the time cons\tant of the RC circuit?
A. 0.1 s
B. 1 s
C. 10 s
D. 100 s
Question 11
A gas is heated from 300 K to 400 K at cons\tant volume. If the initial volume is 2.00 L, what is the final volume?
A. 4.00 L
B. 3.33 L
C. 2.00 L
D. 1.50 L
Question 12
A wave has a frequency of 50 Hz and a wavelength of 2 m. What is the speed of the wave?
A. 100 m/s
B. 200 m/s
C. 300 m/s
D. 400 m/s
Question 13
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 change in its kinetic energy?
A. 50 J
B. 100 J
C. 150 J
D. 200 J
Question 14
A magnetic field of 0.5 T is applied to a current-carrying wire of length 2 m. If the current is 2 A, what is the force experienced by the wire?
A. 0.5 N
B. 1.0 N
C. 1.5 N
D. 2.0 N
Question 15
A 240 V, 10 A circuit has a resis\tance of 12 Ω. If a 20 Ω resistor is connected in series with the circuit, what is the new current in the circuit?
A. 5 A
B. 6 A
C. 8 A
D. 10 A

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