POST UTME RHEMA UNIVERSITY 2021 Physics | Objective

Are you preparing for POST UTME RHEMA UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2021 Physics (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
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 force acting on the particle?
A. 12 N
Correct B. 16 N
C. 20 N
D. 24 N

Correct Answer: B

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Question 2
A block of mass 5 kg 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. 2 m/s^2
Correct B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2

Correct Answer: B

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Question 3
A 2 kg object is moving in a circular path of radius 4 m with a cons\tant speed of 3 m/s. What is the magnitude of the force acting on the object?
A. 8 N
B. 12 N
Correct C. 16 N
D. 20 N

Correct Answer: C

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Question 4
A block of mass 3 kg is placed on a frictionless surface and a horizontal force of 8 N is applied to it. What is the acceleration of the block?
A. 2 m/s^2
Correct B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2

Correct Answer: B

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Question 5
A 4 kg object is moving in a circular path of radius 5 m with a cons\tant speed of 2 m/s. What is the magnitude of the force acting on the object?
A. 16 N
Correct B. 20 N
C. 24 N
D. 28 N

Correct Answer: B

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Question 6
A 2.5 kg block is susp\ended from a spring with a force cons\tant of 200 N/m. If the block is displaced by 0.15 m from its equilibrium position, what is the magnitude of the force exerted by the spring on the block?
A. 30 N
B. 40 N
Correct C. 50 N
D. 60 N

Correct Answer: C

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Question 7
A gas at an initial pressure of 2.0 atm and temperature of 300 K is compressed to a final pressure of 4.0 atm and temperature of 400 K. What is the final volume of the gas?
A. 0.25 m^3
Correct B. 0.50 m^3
C. 0.75 m^3
D. 1.0 m^3

Correct Answer: B

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Question 8
A 10 μF capacitor is connected in series with a 20 Ω resistor and a 50 V battery. What is the current flowing through the circuit?
A. 0.25 A
B. 0.50 A
Correct C. 0.75 A
D. 1.0 A

Correct Answer: C

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Question 9
A 5 kg block is moving at a speed of 2 m/s on a frictionless surface. If a force of 10 N is applied to the block, what is its new speed?
A. 2.5 m/s
B. 3.0 m/s
Correct C. 3.5 m/s
D. 4.0 m/s

Correct Answer: C

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Question 10
A 10 μF capacitor is connected in parallel with a 20 μF capacitor. What is the equivalent capaci\tance?
A. 10 μF
B. 20 μF
Correct C. 30 μF
D. 40 μF

Correct Answer: C

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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, what is the magnitude of the acceleration of the particle?
A. 10 m/s^2
Correct B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2

Correct Answer: B

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Question 12
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. If the acceleration due to gravity is 9.8 m/s^2, what is the maximum height reached by the projectile?
A. 15 m
Correct B. 20 m
C. 25 m
D. 30 m

Correct Answer: B

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Question 13
A wave function is given by ψ(x) = Ae^\( -αx^2 \). If the wave function is normalized, what is the value of the cons\tant A?
Correct A. 1/√(2α)
B. 1/√(α)
C. √(α)
D. α

Correct Answer: A

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Question 14
A circuit consists of a 12 Ω resistor, a 20 Ω resistor, and a 30 Ω resistor connected in series. If a voltage of 120 V is applied across the circuit, what is the current flowing through the circuit?
A. 2 A
B. 3 A
Correct C. 4 A
D. 5 A

Correct Answer: C

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Question 15
A vector A has a magnitude of 5 units and makes an angle of 30° with the positive x-axis. If a vector B has a magnitude of 3 units and makes an angle of 60° with the positive x-axis, what is the magnitude of the resul\tant vector A + B?
A. 4 units
B. 5 units
Correct C. 6 units
D. 7 units

Correct Answer: C

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Question 16
A gas is enclosed in a vessel of volume 5.0 L at a temperature of 300 K. If the temperature is increased to 400 K, what is the new volume of the gas, assuming ideal gas behavior?
A. 6.25 L
B. 7.5 L
Correct C. 8.33 L
D. 9.0 L

Correct Answer: C

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Question 17
A 10 μF capacitor is connected in series with a 20 Ω resistor and a 120 V AC source. What is the impedance of the circuit?
A. 15 Ω
Correct B. 20 Ω
C. 25 Ω
D. 30 Ω

Correct Answer: B

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Question 18
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 force acting on the particle?
A. 10 N
B. 12 N
Correct C. 15 N
D. 20 N

Correct Answer: C

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Question 19
A 5 kg block is moving up a 30° incline with a cons\tant speed of 2 m/s. What is the work done by the force of gravity?
A. -50 J
Correct B. -60 J
C. -70 J
D. -80 J

Correct Answer: B

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Question 20
A 2 kg object is moving in a circular path of radius 4 m with a cons\tant speed of 3 m/s. What is the magnitude of the acceleration of the object?
A. 2 m/s^2
B. 3 m/s^2
Correct C. 4 m/s^2
D. 5 m/s^2

Correct Answer: C

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Question 21
A 100 Hz AC voltage is applied across a capacitor of capaci\tance 10 μF. What is the reac\tance of the capacitor?
A. 10 Ω
Correct B. 100 Ω
C. 1000 Ω
D. 10,000 Ω

Correct Answer: B

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Question 22
A sound wave has a frequency of 200 Hz and a wavelength of 1.5 m. What is the speed of the sound wave?
A. 300 m/s
Correct B. 600 m/s
C. 900 m/s
D. 1200 m/s

Correct Answer: B

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Question 23
A 5 μF capacitor is connected in series with a 10 kΩ resistor. What is the time cons\tant of the circuit?
Correct A. 0.05 s
B. 0.5 s
C. 5 s
D. 50 s

Correct Answer: A

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Question 24
A 100 W light bulb is connected to a 230 V AC power source. What is the current drawn by the bulb?
A. 0.4 A
B. 0.6 A
Correct C. 0.8 A
D. 1.0 A

Correct Answer: C

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Question 25
A 10 μF capacitor is connected in parallel with a 5 μF capacitor. What is the equivalent capaci\tance of the circuit?
A. 5 μF
B. 10 μF
Correct C. 15 μF
D. 20 μF

Correct Answer: C

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