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POST UTME COAL CITY UNIVERSITY 2022 Physics | Objective

Are you preparing for POST UTME COAL CITY UNIVERSITY exams? Reviewing past 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.

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. 16 N

B. 24 N

Correct C. 32 N

D. 40 N

Correct Answer: C

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Question 2

A magnetic field of strength 0.5 T is directed along the positive z-axis. A current of 2 A flows in a wire loop of radius 0.2 m. What is the magnitude of the magnetic moment of the loop?

A. 0.1 A m^2

Correct B. 0.2 A m^2

C. 0.3 A m^2

D. 0.4 A m^2

Correct Answer: B

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Question 3

A gas is contained in a cylinder of volume 2 L at a temperature of 300 K. The gas expands to a volume of 4 L at a temperature of 400 K. What is the ratio of the final pressure to the initial pressure?

A. 0.5

B. 1

Correct C. 2

D. 4

Correct Answer: C

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Question 4

A vector \overrightarrow{A} has a magnitude of 5 units and makes an angle of 30° with the positive x-axis. What is the x-component of the vector?

Correct A. 2.5

B. 3.5

C. 4.5

D. 5.5

Correct Answer: A

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Question 5

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 A

Correct B. 2 A

C. 3 A

D. 4 A

Correct Answer: B

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Question 6

A parallel-plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 2.5 x 10^-10 F, what is the charge on the plates when the potential difference between them is 100 V?

A. 2.5 x 10^-8 C

Correct B. 5 x 10^-8 C

C. 1 x 10^-7 C

D. 2 x 10^-7 C

Correct Answer: B

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Question 7

A particle of mass 0.5 kg is moving in a circular path of radius 2 m with a speed of 4 m/s. What is the magnitude of the centripetal acceleration?

A. 0.5 m/s^2

B. 1 m/s^2

Correct C. 2 m/s^2

D. 4 m/s^2

Correct Answer: C

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Question 8

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°

Correct C. 40°

D. 50°

Correct Answer: C

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Question 9

A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. What is the equivalent resis\tance?

A. 10 Ω

B. 20 Ω

C. 30 Ω

Correct D. 60 Ω

Correct Answer: D

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Question 10

A 50 Hz AC voltage is applied to a circuit with a resis\tance of 10 Ω and an inductive reac\tance of 20 Ω. What is the impedance?

A. 10 Ω

B. 20 Ω

Correct C. 22.36 Ω

D. 25 Ω

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 subject 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 wave has a frequency of 50 Hz and a wavelength of 0.2 m. If the wave is traveling in the positive x-direction, what is the direction of the group velocity?

Correct A. Positive x-direction

B. Negative x-direction

C. Positive y-direction

D. Negative y-direction

Correct Answer: A

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Question 13

A body is moving in a straight line with an initial velocity of 10 m/s and a cons\tant acceleration of 2 m/s^2. If the body is subject to a force of 20 N, what is the magnitude of the force?

A. 10 N

Correct B. 20 N

C. 30 N

D. 40 N

Correct Answer: B

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Question 14

A particle is moving in a circular path with a cons\tant speed of 5 m/s. If the particle is subject to a centripetal force of 15 N, what is the magnitude of the acceleration of the particle?

A. 10 m/s^2

Correct B. 15 m/s^2

C. 20 m/s^2

D. 25 m/s^2

Correct Answer: B

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Question 15

A wave has a frequency of 100 Hz and a wavelength of 0.1 m. If the wave is traveling in the positive x-direction, what is the direction of the group velocity?

Correct A. Positive x-direction

B. Negative x-direction

C. Positive y-direction

D. Negative y-direction

Correct Answer: A

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Question 16

A radioactive sample emits \alpha particles with a half-life of 5 days. If the initial activity is 100 Bq, what is the activity after 15 days?

A. 50 Bq

B. 25 Bq

Correct C. 12.5 Bq

D. 6.25 Bq

Correct Answer: C

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Question 17

A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If the particle has a speed of 4 m/s, what is the magnitude of the centripetal acceleration?

A. 0.5 m/s^2

B. 1 m/s^2

Correct C. 2 m/s^2

D. 4 m/s^2

Correct Answer: C

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Question 18

A capacitor consists of two parallel plates separated by a dis\tance of 2 mm. If the capaci\tance is 10 nF, what is the charge stored on the capacitor when a potential difference of 5 V is applied?

A. 50 nC

B. 100 nC

Correct C. 200 nC

D. 500 nC

Correct Answer: C

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Question 19

A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the maximum height reached by the projectile?

A. 10 m

Correct B. 15 m

C. 20 m

D. 25 m

Correct Answer: B

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Question 20

A circuit consists of a 10 Ω resistor and a 20 Ω resistor connected in series. If a voltage of 12 V is applied across the circuit, what is the current flowing through the circuit?

A. 0.5 A

B. 1 A

Correct C. 2 A

D. 4 A

Correct Answer: C

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Question 21

A parallel plate capacitor has plates of area 0.04 m^2, separated by a dis\tance of 0.02 m. The capaci\tance is 2.5 nF. If the potential difference between the plates is 10 V, determine the charge stored on the capacitor.

Correct A. 6.25 \u00B5C

B. 12.5 \u00B5C

C. 25 \u00B5C

D. 50 \u00B5C

Correct Answer: A

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Question 22

A ray of light passes through a prism and is re\fracted. If the angle of incidence is 30° and the angle of re\fraction is 20°, determine the angle of deviation.

A. 10°

Correct B. 20°

C. 30°

D. 40°

Correct Answer: B

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Question 23

A magnetic field is produced by a current-carrying coil. If the current is 2 A and the number of turns is 50, determine the magnetic field strength.

A. 0.1 T

Correct B. 0.2 T

C. 0.3 T

D. 0.4 T

Correct Answer: B

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Question 24

A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. Determine the maximum height reached by the projectile.

A. 5 m

Correct B. 10 m

C. 15 m

D. 20 m

Correct Answer: B

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Question 25

A fluid is flowing through a horizontal pipe with a cross-sectional area of 0.01 m^2. If the pressure difference between the two \ends of the pipe is 1000 Pa, determine the flow rate.

Correct A. 0.01 m^3/s

B. 0.02 m^3/s

C. 0.03 m^3/s

D. 0.04 m^3/s

Correct Answer: A

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