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POST UTME PAN-ATLANTIC UNIVERSITY 2025 Physics | Objective

Are you preparing for POST UTME PAN-ATLANTIC UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2025 Physics (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1

A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. If a 12 V battery is connected across the circuit, what is the current flowing through the 10 Ω resistor?

Correct A. 0.4 A

B. 0.6 A

C. 0.8 A

D. 1.2 A

Correct Answer: A

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Question 2

A body is moving in a straight line with an initial velocity of 5 m/s. After 2 seconds, its velocity is 10 m/s. What is the acceleration of the body?

A. 2.5 m/s^2

Correct B. 5 m/s^2

C. 10 m/s^2

D. 20 m/s^2

Correct Answer: B

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Question 3

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

A. 0.4 A

B. 0.6 A

Correct C. 0.8 A

D. 1.2 A

Correct Answer: C

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Question 4

A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. What is the speed of the sound wave?

A. 100 m/s

B. 200 m/s

Correct C. 400 m/s

D. 800 m/s

Correct Answer: C

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Question 5

A gas is heated from 20°C to 80°C. What is the change in temperature?

A. 10°C

Correct B. 20°C

C. 30°C

D. 40°C

Correct Answer: B

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Question 6

A gas is enclosed in a container with a movable piston. The gas is heated, cau\sing its pressure to increase. Which of the following best describes the change in the gas's volume?

A. The volume of the gas decreases.

Correct B. The volume of the gas increases.

C. The volume of the gas remains cons\tant.

D. The volume of the gas becomes negative.

Correct Answer: B

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Question 7

A sound wave with a frequency of 200 Hz is traveling through a medium with a speed of 340 m/s. What is the wavelength of the sound wave?

Correct A. 1.7 m

B. 1.7 cm

C. 1.7 km

D. 1.7 μm

Correct Answer: A

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Question 8

A block of mass 2 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. The block is displaced by 0.2 m from its equilibrium position and released from rest. What is the maximum speed of the block?

A. 2 m/s

B. 4 m/s

Correct C. 6 m/s

D. 8 m/s

Correct Answer: C

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Question 9

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 6 Ω resistor?

A. 1 A

Correct B. 2 A

C. 3 A

D. 4 A

Correct Answer: B

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Question 10

A magnetic field is produced by a current-carrying wire. The wire is 1 m long and carries a current of 2 A. What is the magnitude of the magnetic field at a dis\tance of 0.5 m from the wire?

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 11

A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the dielectric cons\tant of the material between the plates is 3, calculate the capaci\tance.

A. 2.5 x 10^-10 F

Correct B. 5.0 x 10^-10 F

C. 7.5 x 10^-10 F

D. 1.0 x 10^-9 F

Correct Answer: B

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Question 12

A 100 W light bulb is connected to a 230 V AC supply. If the bulb is rated for 1000 hours of operation, calculate the total energy consumed in kWh.

Correct A. 100 kWh

B. 200 kWh

C. 300 kWh

D. 400 kWh

Correct Answer: A

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Question 13

A magnetic field of 0.5 T is applied to a coil of 100 turns and radius 0.1 m. If the coil is connected to a 10 A current source, calculate the induced emf.

A. 0.5 V

Correct B. 1.0 V

C. 1.5 V

D. 2.0 V

Correct Answer: B

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Question 14

A gas is heated from 300 K to 400 K. If the initial volume is 2 m^3 and the final volume is 3 m^3, calculate the work done.

A. 100 J

Correct B. 200 J

C. 300 J

D. 400 J

Correct Answer: B

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Question 15

A heat engine operates between 500 K and 300 K. If the efficiency is 30%, calculate the maximum work output.

A. 1000 J

Correct B. 2000 J

C. 3000 J

D. 4000 J

Correct Answer: B

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Question 16

A parallel plate capacitor has plates of area 0.04 m^2, separated by a dis\tance of 0.02 m. The capaci\tance of the capacitor is 2.5 nF. If a potential difference of 10 V is applied across the plates, what is the magnitude of the displacement current?

A. 0.25 A

Correct B. 0.5 A

C. 1 A

D. 2 A

Correct Answer: B

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Question 17

A sound wave with a frequency of 200 Hz has a speed of 340 m/s. What is the wavelength of the sound wave?

A. 1.5 m

Correct B. 1.7 m

C. 2 m

D. 2.5 m

Correct Answer: B

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Question 18

A circuit consists of a 10 Ω resistor, a 20 Ω resistor, and a 30 Ω resistor connected in series. A voltage of 12 V is applied across the circuit. What is the current flowing through the circuit?

A. 0.1 A

Correct B. 0.2 A

C. 0.3 A

D. 0.4 A

Correct Answer: B

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Question 19

A gas expands from 1 L to 2 L against an external pressure of 2 atm. If the initial temperature is 300 K, what is the final temperature?

Correct A. 200 K

B. 300 K

C. 400 K

D. 500 K

Correct Answer: A

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Question 20

A beam 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°, what is the angle of deviation?

Correct A. 10°

B. 20°

C. 30°

D. 40°

Correct Answer: A

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Question 21

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 22

A radioactive sample has a half-life of 5 years. If the initial activity of the sample is 1000 Bq, what is the activity of the sample after 10 years?

Correct A. 125 Bq

B. 250 Bq

C. 500 Bq

D. 1000 Bq

Correct Answer: A

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Question 23

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 air resis\tance is negligible, 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 24

A block of mass 5 kg is susp\ended from a spring with a spring cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position, what is the magnitude of the force exerted by the spring on the block?

A. 10 N

B. 20 N

C. 40 N

Correct D. 80 N

Correct Answer: D

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Question 25

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. 25°

C. 30°

D. 35°

Correct Answer: B

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