POST UTME LEAD CITY UNIVERSITY 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A projectile is launched at an angle of 45° with an initial velocity of 20 m/s. What is the maximum height reached by the projectile?
A. 10 m
B. 20 m
C. 30 m
D. 40 m
Question 2
A capacitor consists of two parallel plates, each of area 0.1 m², separated by a dis\tance of 0.01 m. If the potential difference between the plates is 10 V, what is the capaci\tance?
A. 0.01 F
B. 0.02 F
C. 0.03 F
D. 0.04 F
Question 3
A heat engine operates between the temperatures 500 K and 300 K. If the engine has an efficiency of 30%, what is the value of the work done per cycle?
A. 100 J
B. 200 J
C. 300 J
D. 400 J
Question 4
A circuit consists of a resistor $R$, an inductor $L$, and a capacitor $C$ connected in series. The circuit is driven by an alternating voltage source of frequency $f$. What is the impedance of the circuit?
A. \( \sqrt{R^2 + \( X_L - X_C \ \)^2} )
B. \( \sqrt{R^2 + \( X_C - X_L \ \)^2} )
C. \( R + X_L - X_C \)
D. \( R - X_L + X_C \)
Question 5
A physical quantity is measured to be $5.2 pm 0.1$ meters. What is the uncertainty in the measurement?
A. \( 0.1 , \text{m} \)
B. \( 0.2 , \text{m} \)
C. \( 0.3 , \text{m} \)
D. \( 0.4 , \text{m} \)
Question 6
A particle of mass 2.0 kg is moving in a circular path with a radius of 3.0 m. If the particle has a speed of 4.0 m/s, calculate the centripetal force acting on the particle in Newtons.
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 7
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 force acting on the particle?
A. 10 N
B. 12 N
C. 15 N
D. 18 N
Question 8
A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If the particle completes 5 revolutions per second, calculate its angular velocity u\sing the formula ω = v/r.
A. 10 rad/s
B. 20 rad/s
C. 30 rad/s
D. 40 rad/s
Question 9
A 100 W light bulb is connected to a 220 V power source. Calculate the current drawn by the bulb u\sing Joule's law.
A. 0.45 A
B. 0.9 A
C. 1.8 A
D. 4.5 A
Question 10
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 11
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 force?
A. 8 N
B. 12 N
C. 16 N
D. 20 N
Question 12
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 0.5 m from its equilibrium position and released, calculate the time period of the oscillation.
A. 1 s
B. 2 s
C. 3 s
D. 4 s
Question 13
A particle moves in a circular path with a radius of 2 m and a speed of 4 m/s. If the particle is moving in a clockwise direction, what is the magnitude of the acceleration?
A. 1 m/s^2
B. 2 m/s^2
C. 4 m/s^2
D. 8 m/s^2
Question 14
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm away. Calculate the magnification of the image.
A. 1/2
B. 1/3
C. 2/3
D. 3/4
Question 15
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. If the projectile lands 10 seconds later, calculate the maximum height reached by the projectile in meters.
A. 5 m
B. 10 m
C. 15 m
D. 20 m

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