POST UTME RSU 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A beam 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 2
A light source is placed 2 m away from a convex lens of focal length 0.5 m. If the light source is moved 0.5 m closer to the lens, calculate the new image dis\tance.
A. 1.5 m
B. 2 m
C. 2.5 m
D. 3 m
Question 3
A light ray passes from air into 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 4
A magnetic field of 0.5 T is applied to a coil of 100 turns and a radius of 0.2 m. If the current flowing through the coil is 2 A, what is the magnitude of the torque experienced by the coil?
A. 0.1 Nm
B. 0.2 Nm
C. 0.3 Nm
D. 0.4 Nm
Question 5
A 5 kg block is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 2 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 6
A 6 Ω resistor is connected in series with a 12 Ω resistor. What is the equivalent resis\tance of the circuit?
A. 6 Ω
B. 12 Ω
C. 18 Ω
D. 24 Ω
Question 7
A light ray passes from air into a glass slab of thickness 5 cm and re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.
A. 20°
B. 25°
C. 30°
D. 35°
Question 8
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. What is the magnitude of the centripetal acceleration?
A. 0.5 m/s²
B. 1 m/s²
C. 2 m/s²
D. 4 m/s²
Question 9
A wave has a frequency of 50 Hz and a wavelength of 0.1 m. What is the speed of the wave?
A. 5 m/s
B. 10 m/s
C. 20 m/s
D. 50 m/s
Question 10
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, what is the magnitude of the acceleration of the particle?
A. 8 m/s^2
B. 10 m/s^2
C. 12 m/s^2
D. 16 m/s^2
Question 11
A 12 V battery is connected in series with a 4 Ω resistor and a 6 Ω resistor. What is the current flowing through the circuit?
A. 1.5 A
B. 2 A
C. 2.5 A
D. 3 A
Question 12
A radioactive sample has a half-life of 5 years. If the initial activity is 100 Bq, what is the activity after 10 years?
A. 20 Bq
B. 30 Bq
C. 40 Bq
D. 50 Bq
Question 13
A gas is heated from 0°C to 100°C at cons\tant pressure. If the initial volume is 1 L, find the final volume.
A. 2 L
B. 3 L
C. 4 L
D. 5 L
Question 14
A radioactive sample emits \alpha particles with a half-life of 5 minutes. If the initial activity is 100 Bq, what is the activity after 10 minutes?
A. 50 Bq
B. 25 Bq
C. 12.5 Bq
D. 6.25 Bq
Question 15
A beam of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, find the angle of re\fraction.
A. 20°
B. 25°
C. 30°
D. 35°

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