POST UTME RSU 2022 Physics | Objective

Prepare for your exams with POST UTME RSU questions? Reviewing past/model questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2022 Physics (Objective) questions designed to simulate the real exam environment.

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Question 1 View Details
A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 20 V is applied across it, what is the charge stored on the plates?
A. 2 μC
Correct B. 20 μC
C. 200 μC
D. 2000 μC

Correct Answer: B

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Question 2 View Details
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 force acting on the particle?
A. 10 N
B. 20 N
Correct C. 30 N
D. 40 N

Correct Answer: C

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Question 3 View Details
A ray of light 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°
Correct B. 30°
C. 40°
D. 50°

Correct Answer: B

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Question 4 View Details
A car travels from rest to a speed of 25 m/s in 10 s. What is the acceleration of the car?
A. 2 m/s^2
B. 5 m/s^2
Correct C. 10 m/s^2
D. 20 m/s^2

Correct Answer: C

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Question 5 View Details
A photon has an energy of 2 eV. What is its momentum?
A. 0.5 × 10^-24 kg m/s
B. 1 × 10^-24 kg m/s
Correct C. 2 × 10^-24 kg m/s
D. 5 × 10^-24 kg m/s

Correct Answer: C

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Question 6 View Details
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 8.0 x 10^-10 F, what is the dielectric cons\tant of the material between the plates?
A. 1.0
Correct B. 2.0
C. 3.0
D. 4.0

Correct Answer: B

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Question 7 View Details
A particle of mass 2.0 kg is moving in a circular path of radius 3.0 m with a speed of 4.0 m/s. What is the magnitude of the centripetal force acting on the particle?
A. 10.0 N
B. 20.0 N
Correct C. 30.0 N
D. 40.0 N

Correct Answer: C

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Question 8 View Details
A light ray 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°
Correct B. 30°
C. 40°
D. 50°

Correct Answer: B

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Question 9 View Details
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 circuit?
A. 1.0 A
B. 2.0 A
Correct C. 3.0 A
D. 4.0 A

Correct Answer: C

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Question 10 View Details
A photon of wavelength 600 nm is incident on a metal surface. If the work function of the metal is 2.0 eV, what is the maximum kinetic energy of the emitted electron?
A. 1.0 eV
B. 2.0 eV
Correct C. 3.0 eV
D. 4.0 eV

Correct Answer: C

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Question 11 View Details
A gas is heated from 300 K to 400 K at cons\tant volume. If the initial volume is 2.0 L and the gas cons\tant is 8.314 J/\( mol*K \), what is the change in internal energy of 1.0 mole of the gas?
A. 10.0 kJ
Correct B. 20.0 kJ
C. 30.0 kJ
D. 40.0 kJ

Correct Answer: B

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Question 12 View Details
A particle of mass 2.0 kg is moving in a circular path of radius 3.0 m with a cons\tant speed of 4.0 m/s. What is the magnitude of the centripetal acceleration of the particle?
A. 0.50 m/s^2
B. 1.0 m/s^2
Correct C. 1.5 m/s^2
D. 2.0 m/s^2

Correct Answer: C

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Question 13 View Details
A block of mass 5.0 kg 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 released from rest. What is the maximum speed of the block?
A. 0.50 m/s
B. 1.0 m/s
Correct C. 1.5 m/s
D. 2.0 m/s

Correct Answer: C

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Question 14 View Details
A 10.0 Ω resistor is connected in series with a 20.0 Ω resistor and a 30.0 Ω resistor. What is the equivalent resis\tance of the circuit?
A. 10.0 Ω
B. 20.0 Ω
C. 30.0 Ω
Correct D. 60.0 Ω

Correct Answer: D

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Question 15 View Details
A heat engine operates between a high-temperature reservoir at 500 K and a low-temperature reservoir at 300 K. If the engine has an efficiency of 30%, what is the maximum possible work output of the engine?
A. 1000 J
B. 2000 J
Correct C. 3000 J
D. 4000 J

Correct Answer: C

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Question 16 View Details
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 net force acting on the particle?
A. 8 N
B. 12 N
Correct C. 16 N
D. 20 N

Correct Answer: C

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Question 17 View Details
A 100 V, 50 Hz AC source is connected to a 50 Ω resistor. What is the rms value of the current flowing through the resistor?
A. 1 A
Correct B. 2 A
C. 5 A
D. 10 A

Correct Answer: B

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Question 18 View Details
A convex lens of focal length 20 cm is used to form an image of an object placed 30 cm in front of it. What is the magnification of the image?
A. -0.5
Correct B. -1
C. -2
D. -3

Correct Answer: B

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Question 19 View Details
A force of 10 N acts on an object of mass 2 kg, cau\sing it to accelerate at 5 m/s^2. What is the net force acting on the object?
A. 5 N
Correct B. 10 N
C. 15 N
D. 20 N

Correct Answer: B

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Question 20 View Details
A heat engine operates between temperatures of 500 K and 300 K. What is the efficiency of the engine?
A. 0.25
B. 0.33
C. 0.5
Correct D. 0.67

Correct Answer: D

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Question 21 View Details
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. 6 m/s^2
B. 12 m/s^2
Correct C. 24 m/s^2
D. 48 m/s^2

Correct Answer: C

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Question 22 View Details
A circuit consists of a 12 V battery, a 4 Ω resistor, and an unknown resistor. If the current in the circuit is 2 A, what is the value of the unknown resistor?
Correct A. 2 Ω
B. 4 Ω
C. 6 Ω
D. 8 Ω

Correct Answer: A

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Question 23 View Details
A wave has a frequency of 50 Hz and a wavelength of 0.1 m. What is the speed of the wave?
Correct A. 5 m/s
B. 10 m/s
C. 20 m/s
D. 50 m/s

Correct Answer: A

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Question 24 View Details
A particle of mass 1 kg is moving in a circular path of radius 2 m with a cons\tant speed of 3 m/s. If the particle is subjected to a centripetal force of 6 N, what is the magnitude of the acceleration of the particle?
A. 6 m/s^2
B. 12 m/s^2
Correct C. 24 m/s^2
D. 48 m/s^2

Correct Answer: C

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Question 25 View Details
A circuit consists of a 12 V battery, a 2 Ω resistor, and an unknown resistor. If the current in the circuit is 4 A, what is the value of the unknown resistor?
Correct A. 1 Ω
B. 2 Ω
C. 4 Ω
D. 6 Ω

Correct Answer: A

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