POST UTME UNILORIN 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 100 W light bulb is connected to a 220 V power source. What is the current drawn by the bulb?
A. 0.4 A
B. 0.5 A
C. 0.6 A
D. 0.7 A
Question 2
A radioactive sample has a half-life of 10 years. If the initial activity is 100 Bq, calculate the activity after 20 years.
A. 12.5 Bq
B. 25 Bq
C. 50 Bq
D. 100 Bq
Question 3
A wave has a frequency of 50 Hz and a wavelength of 0.2 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 4
A block of mass 2 kg is placed on a frictionless surface and connected to a spring with spring cons\tant 100 N/m. The block is displaced by 0.2 m from its equilibrium position and released from rest. Calculate 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 radioactive sample has a half-life of 10 years. If the initial activity is 100 Bq, what is the activity after 20 years?
A. 12.5 Bq
B. 25 Bq
C. 37.5 Bq
D. 50 Bq
Question 6
A particle of mass 1 kg is in a state of superposition with two possible energies: 10 J and 20 J. What is the uncertainty in the energy of the particle?
A. 5 J
B. 10 J
C. 15 J
D. 20 J
Question 7
A 5.0 kg block is attached to a horizontal, massless spring with a force cons\tant of 200 N/m. The block is displaced by 0.20 m from its equilibrium position and then released from rest. What is the maximum speed of the block?
A. 1.0 m/s
B. 2.0 m/s
C. 4.0 m/s
D. 8.0 m/s
Question 8
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the dielectric cons\tant of the material between the plates is 3.0, calculate the capaci\tance.
A. 1.0 x 10^-9 F
B. 2.0 x 10^-9 F
C. 3.0 x 10^-9 F
D. 4.0 x 10^-9 F
Question 9
A current of 2.0 A flows through a resistor of 10 Ω for 5.0 s. What is the total energy dissipated in the resistor?
A. 20 J
B. 40 J
C. 60 J
D. 80 J
Question 10
A parallel plate capacitor with plates of area 0.04 m^2 and separation 0.02 m is charged to a potential difference of 10 V. If a dielectric slab of thickness 0.01 m and dielectric cons\tant 4 is inserted between the plates, what is the new capaci\tance?
A. 0.02 F
B. 0.03 F
C. 0.04 F
D. 0.05 F
Question 11
A ray of light is incident on a glass slab at an angle of 60°. If the re\fractive index of the glass is 1.5, calculate the angle of re\fraction.
A. 30°
B. 40°
C. 50°
D. 60°
Question 12
A block of mass 2 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 0.1 m from its equilibrium position and released, what is the maximum speed of the block?
A. 0.5 m/s
B. 1 m/s
C. 1.5 m/s
D. 2 m/s
Question 13
A radioactive sample has a half-life of 5 years. If the initial activity is 1000 Bq, what is the activity after 10 years?
A. 500 Bq
B. 750 Bq
C. 1000 Bq
D. 1250 Bq
Question 14
A ray of light passes from air into a glass 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 15
A magnetic field of 0.5 T is applied to a coil of 100 turns and area 0.01 m^2. If the resis\tance of the coil is 10 ohms, calculate the induced emf.
A. 0.1 V
B. 0.2 V
C. 0.5 V
D. 1.0 V

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