POST UTME COAL CITY UNIVERSITY 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A gas is heated from 20°C to 50°C. If the initial volume is 2 L, what is the final volume?
A. 1 L
B. 2 L
C. 4 L
D. 8 L
Question 2
A particle of mass 2 kg is moving in a circular path of radius 5 m with a speed of 10 m/s. What is the magnitude of the centripetal force acting on the particle?
A. 20 N
B. 40 N
C. 60 N
D. 80 N
Question 3
A particle moves in a circular path with a radius of 2 m and a speed of 4 m/s. What is the centripetal acceleration of the particle?
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 4 m/s^2
Question 4
A 2 kg block is attached to a horizontal spring with a force cons\tant of 100 N/m. The block is displaced by 0.5 m from its equilibrium position and released. 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 5
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. Calculate the magnitude of the centripetal force acting on the particle.
A. 10 N
B. 12 N
C. 15 N
D. 20 N
Question 6
A unit of length is defined as 0.01 m. If a length is measured to be 0.05 m, what is the number of units?
A. 1 unit
B. 2 units
C. 5 units
D. 10 units
Question 7
A gas is heated from 300 K to 400 K at cons\tant volume. Calculate the change in internal energy of the gas.
A. 100 J
B. 200 J
C. 300 J
D. 400 J
Question 8
A particle of mass 1.0 kg is moving in a circular path of radius 2.0 m with a cons\tant speed of 3.0 m/s. If the particle is subject to a centripetal force of 6.0 N, what is the magnitude of the acceleration of the particle?
A. 1.0 m/s^2
B. 2.0 m/s^2
C. 3.0 m/s^2
D. 4.0 m/s^2
Question 9
A beam of light passes through a prism and is re\fracted at an angle of 30°. If the angle of incidence is 20°, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 10
A magnetic field is produced by a current-carrying wire. If the current is 2 A and the length of the wire is 1 m, what is the magnetic field strength?
A. 0.1 T
B. 0.2 T
C. 0.5 T
D. 1 T
Question 11
A gas is heated from 300 K to 400 K at cons\tant volume. If the initial pressure is 1 atm, calculate the final pressure.
A. 1.33 atm
B. 1.5 atm
C. 1.67 atm
D. 2 atm
Question 12
A 1000 Hz sound wave is traveling through a medium with a speed of 343 m/s. What is the wavelength of the sound wave?
A. 1.43 m
B. 0.71 m
C. 2.86 m
D. 3.43 m
Question 13
A lens of focal length 20 cm is used to form an image of an object placed 30 cm away from the lens. Calculate the magnification of the lens.
A. 0.5
B. 1
C. 1.5
D. 2
Question 14
A thermodynamic system undergoes a process from state A to state B. If the system's internal energy increases by 100 J and the work done on the system is 50 J, what is the change in the system's entropy?
A. 0.5 J/K
B. 1 J/K
C. 2 J/K
D. 5 J/K
Question 15
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 combined lens?
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm

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