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POST UTME SKYLINE UNIVERSITY 2019 Physics | Objective

Are you preparing for POST UTME SKYLINE UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2019 Physics (Objective) questions designed to simulate the real exam environment.

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Question 1

A parallel plate capacitor has a capaci\tance of 2 μF. If a potential difference of 10 V is applied across the plates, what is the charge stored on each plate?

A. 20 μC

Correct B. 40 μC

C. 60 μC

D. 80 μC

Correct Answer: B

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Question 2

A sound wave has a frequency of 200 Hz and a wavelength of 1.5 m. What is the speed of the 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 3

A block of mass 5 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 0.2 m from its equilibrium position and released, what is the maximum speed of the block?

A. 0.5 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 4

A gas is contained in a cylinder of volume 2 L at a pressure of 1 atm. If the temperature is increased by 10°C, what is the new pressure?

A. 1.1 atm

Correct B. 1.2 atm

C. 1.3 atm

D. 1.4 atm

Correct Answer: B

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Question 5

A particle moves in a circular path with a radius of 2 m and a speed of 4 m/s. What is the magnitude of the acceleration of the particle?

A. 2 m/s^2

B. 4 m/s^2

Correct C. 6 m/s^2

D. 8 m/s^2

Correct Answer: C

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Question 6

A gas is heated from 300 K to 400 K at cons\tant volume. If the initial pressure is 1.2 atm and the final pressure is 2.5 atm, what is the value of the gas cons\tant R?

Correct A. 8.314 J/mol·K

B. 1.38 × 10^\( -23 \) J/K

C. 0.082 L·atm/mol·K

D. 8.314 × 10^7 erg/mol·K

Correct Answer: A

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Question 7

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 value of the acceleration?

A. 4 m/s^2

B. 6 m/s^2

Correct C. 8 m/s^2

D. 10 m/s^2

Correct Answer: C

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Question 8

A radioactive sample has a half-life of 5 days. If the initial activity is 100 Bq, what is the activity after 10 days?

Correct A. 12.5 Bq

B. 25 Bq

C. 50 Bq

D. 100 Bq

Correct Answer: A

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Question 9

A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 60° 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. 10 m

B. 15 m

Correct C. 20 m

D. 25 m

Correct Answer: C

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Question 10

A magnetic field of 0.5 T is applied to a current-carrying wire of length 2 m. If the current is 5 A, what is the force experienced by the wire?

A. 0.5 N

B. 1 N

Correct C. 2 N

D. 5 N

Correct Answer: C

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Question 11

A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 8.0 nF, what is the charge stored when the potential difference between the plates is 50 V?

Correct A. 0.04 C

B. 0.08 C

C. 0.16 C

D. 0.32 C

Correct Answer: A

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Question 12

A particle of mass 2 kg is attached to a spring with spring cons\tant 100 N/m. If the particle is displaced by 0.2 m from its equilibrium position and released from rest, what is the maximum speed of the particle?

A. 0.2 m/s

B. 0.4 m/s

Correct C. 0.6 m/s

D. 0.8 m/s

Correct Answer: C

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Question 13

A circuit consists of a 20 Ω resistor and a 10 Ω resistor connected in series. If a voltage of 50 V is applied across the circuit, what is the current flowing through the 10 Ω resistor?

A. 0.5 A

B. 1.0 A

Correct C. 1.5 A

D. 2.0 A

Correct Answer: C

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Question 14

A block of mass 5 kg is moving with a speed of 10 m/s on a frictionless surface. If the block is subjected to a cons\tant force of 20 N, what is the acceleration of the block?

A. 0.5 m/s^2

B. 1.0 m/s^2

C. 1.5 m/s^2

Correct D. 2.0 m/s^2

Correct Answer: D

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Question 15

A capacitor of capaci\tance 10 μF is charged to a potential difference of 50 V. If the capacitor is then connected across a resistor of resis\tance 20 Ω, what is the time cons\tant of the circuit?

A. 0.1 s

Correct B. 0.2 s

C. 0.5 s

D. 1.0 s

Correct Answer: B

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Question 16

A particle of mass 3 kg is moving in a circular path of radius 2 m with a speed of 5 m/s. What is 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 17

A circuit consists of a 10 Ω resistor and a 20 Ω resistor connected in parallel. If a voltage of 50 V is applied across the circuit, what is the current flowing through the 10 Ω resistor?

Correct A. 0.5 A

B. 1.0 A

C. 1.5 A

D. 2.0 A

Correct Answer: A

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Question 18

A block of mass 4 kg is moving with a speed of 8 m/s on a frictionless surface. If the block is subjected to a cons\tant force of 30 N, what is the acceleration of the block?

A. 1.5 m/s^2

B. 2.0 m/s^2

C. 2.5 m/s^2

Correct D. 3.0 m/s^2

Correct Answer: D

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Question 19

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 force?

A. 10 N

Correct B. 12 N

C. 15 N

D. 20 N

Correct Answer: B

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Question 20

A 10 μF capacitor is connected in series with a 20 Ω resistor and a 5 V battery. What is the current flowing through the circuit?

A. 0.25 A

Correct B. 0.5 A

C. 1 A

D. 2 A

Correct Answer: B

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Question 21

A body of mass 5 kg is moving with a velocity of 10 m/s. If it is subjected to a force of 20 N, what is the acceleration of the body?

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 22

A 100 W bulb is connected to a 220 V power supply. What is the current flowing through the bulb?

A. 0.45 A

Correct B. 0.5 A

C. 0.55 A

D. 0.6 A

Correct Answer: B

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Question 23

A particle of mass 3 kg is moving in a circular path of radius 2 m with a cons\tant speed of 6 m/s. If the particle is subjected to a centripetal force of 18 N, what is the magnitude of the force?

A. 12 N

B. 15 N

Correct C. 18 N

D. 20 N

Correct Answer: C

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Question 24

A 10 μF capacitor is connected in parallel with a 20 Ω resistor and a 5 V battery. What is the current flowing through the circuit?

A. 0.25 A

Correct B. 0.5 A

C. 1 A

D. 2 A

Correct Answer: B

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Question 25

A body of mass 5 kg is moving with a velocity of 10 m/s. If it is subjected to a force of 20 N, what is the acceleration of the body?

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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