POST UTME LASU 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A gas has a pressure of 2 atm and a volume of 10 L. What is the temperature of the gas?
A. 300 K
B. 400 K
C. 500 K
D. 600 K
Question 2
A particle of mass 0.5 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 0.2 m from its equilibrium position and released from rest, calculate the maximum speed of the particle.
A. 0.5 m/s
B. 1 m/s
C. 1.5 m/s
D. 2 m/s
Question 3
A 2.5 m long wire of resis\tance 3.5 Ω is connected in series with a 4.2 V battery. If the current flowing through the wire is 0.5 A, what is the power dissipated in the wire?
A. 4.25 W
B. 6.75 W
C. 8.1 W
D. 10.5 W
Question 4
A wave has a frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
A. 250 m/s
B. 500 m/s
C. 750 m/s
D. 1000 m/s
Question 5
A 100 W bulb is connected to a 220 V supply. If the current flowing through the bulb is 0.5 A, what is the resis\tance of the bulb?
A. 2 Ω
B. 4 Ω
C. 6 Ω
D. 8 Ω
Question 6
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm from the lens. What is the magnification of the image?
A. 1/2
B. 1/3
C. 2/3
D. 3/4
Question 7
A concave lens has a focal length of -20 cm. What is the nature of the lens?
A. Convex
B. Concave
C. Plane
D. Spherical
Question 8
A 5 kg block is placed on a horizontal surface with a coefficient of friction of 0.2. If a horizontal force of 10 N is applied to the block, calculate the acceleration of the block.
A. 0.5 m/s^2
B. 1 m/s^2
C. 1.5 m/s^2
D. 2 m/s^2
Question 9
A wave of wavelength 2 m and frequency 5 Hz is traveling through a medium. If the speed of the wave is 10 m/s, what is the amplitude of the wave?
A. 0.5 m
B. 1 m
C. 2 m
D. 5 m
Question 10
A force of 10 N is applied to an object of mass 5 kg, cau\sing it to accelerate at 2 m/s^2. What is the work done on the object?
A. 20 J
B. 40 J
C. 60 J
D. 80 J
Question 11
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°, calculate the angle of re\fraction.
A. 20°
B. 25°
C. 30°
D. 35°
Question 12
A wave with a frequency of 50 Hz and a wavelength of 2 m is traveling through a medium. If the wave has a speed of 100 m/s, calculate the amplitude of the wave.
A. 0.02 m
B. 0.04 m
C. 0.06 m
D. 0.08 m
Question 13
A radioactive sample has a half-life of 10 years. If the initial activity of the sample is 1000 Bq, what is the activity of the sample after 20 years?
A. 125 Bq
B. 250 Bq
C. 500 Bq
D. 1000 Bq
Question 14
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 acceleration produced?
A. 0.5 m/s²
B. 1 m/s²
C. 2 m/s²
D. 4 m/s²
Question 15
A particle of mass 1 kg is moving in a straight line with an initial velocity of 5 m/s. If the particle is subjected to a cons\tant force of 2 N, what is the velocity of the particle after 10 s?
A. 3 m/s
B. 5 m/s
C. 7 m/s
D. 9 m/s

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