POST UTME DELSU 2025 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 2 kg block is placed on a frictionless surface and a horizontal force of 10 N is applied to it. What is the acceleration of the block?
A. 0.5 m/s^2
B. 1 m/s^2
C. 2 m/s^2
D. 5 m/s^2
Question 2
A 1000 J of work is done in lifting a 200 N block to a height of 5 m. What is the efficiency of the machine used?
A. 20%
B. 30%
C. 40%
D. 50%
Question 3
A quantum particle of mass 1 kg is confined to a one-dimensional box of length 2 m. If the particle is in its ground state, calculate the energy of the particle.
A. 10^-34 J
B. 10^-33 J
C. 10^-32 J
D. 10^-31 J
Question 4
A gas is contained in a cylinder of volume V and is heated from temperature T1 to temperature T2. U\sing the ideal gas law, derive an expression for the change in pressure of the gas.
A. \Delta P = \frac{nR\Delta T}{V}
B. \Delta P = \frac{nRT1}{V}
C. \Delta P = \frac{nRT2}{V}
D. \Delta P = \frac{nR\( T1 - T2 \)}{V}
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. If the particle is subjected to a centripetal acceleration of 2 m/s^2, what is the magnitude of the force acting on the particle?
A. 10 N
B. 12 N
C. 15 N
D. 20 N
Question 6
A beam of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction u\sing Snell's law \( n_1 \sin \theta_1 = n_2 \sin \theta_2 \).
A. 20°
B. 22.5°
C. 25°
D. 27.5°
Question 7
A gas is enclosed in a container with a movable piston. The gas is heated, cau\sing its pressure to increase. Which of the following best describes the change in the gas's volume?
A. The volume of the gas increases.
B. The volume of the gas decreases.
C. The volume of the gas remains cons\tant.
D. The volume of the gas becomes negative.
Question 8
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the 4 Ω resistor?
A. 0.5 A
B. 1.0 A
C. 1.5 A
D. 2.0 A
Question 9
A circuit consists of a 10 Ω resistor and a 20 Ω resistor connected in series. If a voltage of 12 V is applied across the circuit, calculate the current flowing through the circuit.
A. 0.4 A
B. 0.6 A
C. 0.8 A
D. 1 A
Question 10
A gas at 300 K expands from 1 L to 2 L against a cons\tant external pressure of 2 atm. What is the work done by the gas?
A. -200 J
B. -400 J
C. -600 J
D. -800 J
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, calculate the angle through which the particle will rotate in 5 seconds.
A. 10°
B. 20°
C. 30°
D. 40°
Question 12
A wave has a frequency of 100 Hz and a wavelength of 0.1 m. What is the speed of the wave?
A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s
Question 13
A capacitor consists of two parallel plates separated by a dis\tance of 1 mm. If the capaci\tance is 10 μF, what is the charge stored on the capacitor when a potential difference of 5 V is applied?
A. 50 μC
B. 100 μC
C. 150 μC
D. 200 μC
Question 14
A parallel plate capacitor has plates of area 0.01 m^2 and separation 0.001 m. The capaci\tance is 1.5 nF. If a potential difference of 10 V is applied across the plates, calculate the charge stored on the capacitor.
A. 15 \mu C
B. 30 \mu C
C. 45 \mu C
D. 60 \mu C
Question 15
A beam of light is incident on a prism at an angle of 30°. If the re\fractive index of the prism is 1.5, calculate the angle of re\fraction.
A. 20°
B. 30°
C. 40°
D. 50°

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