POST UTME COVENANT UNIVERSITY 2023 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 2 kg block is moving in a circular path with a radius of 1 m. If the block has a speed of 4 m/s, what is the centripetal force acting on it?
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 2
A container of volume V is filled with a gas at temperature T. The gas is heated by 10 K, cau\sing the pressure to increase by 20%. Find the ratio of the final volume to the initial volume.
A. 1.2
B. 1.5
C. 2.0
D. 3.0
Question 3
A beam of light passes through a prism and is re\fracted. The angle of incidence is 30° and the angle of re\fraction is 20°. Find the angle of deviation.
A. 10°
B. 20°
C. 30°
D. 40°
Question 4
A parallel plate capacitor has plates of area 0.01 m^2 and separation 0.001 m. The dielectric cons\tant of the material between the plates is 3. The capacitor is connected to a 12 V battery. Calculate the capaci\tance of the capacitor.
A. 0.01 F
B. 0.02 F
C. 0.03 F
D. 0.04 F
Question 5
A particle of mass m is attached to a spring with spring cons\tant k. The particle is displaced by a dis\tance x from its equilibrium position and released from rest. Assuming the motion is simple harmonic, find the time-dep\endent position of the particle.
A. x(t) = A\cos\( \omega t + \phi \)
B. x(t) = A\sin\( \omega t + \phi \)
C. x(t) = A\cos\( \omega t \)
D. x(t) = A\sin\( \omega t \)
Question 6
A circuit consists of a 12 V battery, a 2 ohm resistor, and a 4 ohm resistor connected in series. Calculate the current flowing through the circuit.
A. 2 A
B. 3 A
C. 4 A
D. 5 A
Question 7
A parallel beam of light of wavelength 500 nm is incident on a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 8
A circuit consists of a resistor (R), an inductor (L), and a capacitor (C) connected in series. The circuit is driven by a voltage source (V) with a frequency of 50 Hz. Find the impedance of the circuit.
A. 10 Ω
B. 20 Ω
C. 30 Ω
D. 40 Ω
Question 9
A 100 W light bulb is connected to a 220 V power source. What is the current drawn by the bulb?
A. 0.25 A
B. 0.5 A
C. 0.75 A
D. 1 A
Question 10
A 5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 2 m from its equilibrium position and released from rest. What is the maximum speed of the block?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 11
A gas has a pressure of 2 atm and a volume of 0.5 m^3. Calculate the temperature of the gas in Kelvin.
A. 300 K
B. 400 K
C. 500 K
D. 600 K
Question 12
A car travels from point A to point B with an average speed of 60 km/h. On the return trip, the car travels with an average speed of 40 km/h. What is the average speed of the car for the entire trip?
A. 40 km/h
B. 50 km/h
C. 60 km/h
D. 70 km/h
Question 13
A particle of mass 0.1 kg is moving in a circular path of radius 0.5 m with a speed of 2 m/s. Calculate the centripetal force acting on the particle.
A. 0.5 N
B. 1 N
C. 2 N
D. 5 N
Question 14
A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. Calculate the speed of the sound wave.
A. 100 m/s
B. 200 m/s
C. 300 m/s
D. 400 m/s
Question 15
A particle of mass m is moving in a circular orbit of radius r with a speed v. Find the centripetal force acting on the particle.
A. mv^2/r
B. mv^2/(2r)
C. mv^2/(3r)
D. mv^2/(4r)

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