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POST UTME ABU 2019 Physics | Objective

Are you preparing for POST UTME ABU 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.

Practice these randomly selected questions to test your readiness.

Question 1

A parallel beam of light of wavelength 500 nm is incident on a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.

A. 20°

Correct B. 25°

C. 30°

D. 35°

Correct Answer: B

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Question 2

A body of mass 2 kg is moving with a velocity of 5 m/s. If a force of 10 N is applied to the body, calculate the acceleration produced.

A. 0.5 m/s²

B. 1 m/s²

Correct C. 2 m/s²

D. 5 m/s²

Correct Answer: C

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Question 3

A thermos flask is filled with 1 L of water at 20°C. If the water is heated to 80°C, calculate the amount of heat energy transferred.

A. 1000 J

B. 2000 J

Correct C. 3000 J

D. 4000 J

Correct Answer: C

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Question 4

A magnetic field of strength 0.5 T is applied to a current-carrying wire of length 1 m. If the current is 2 A, calculate the force experienced by the wire.

A. 0.1 N

Correct B. 0.5 N

C. 1 N

D. 5 N

Correct Answer: B

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Question 5

A gas is heated from 20°C to 80°C. If the initial volume is 1 L, calculate the final volume.

A. 2 L

B. 3 L

Correct C. 4 L

D. 5 L

Correct Answer: C

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Question 6

A 1000 Hz AC voltage source is connected to a 50 Ω resistor. If the maximum voltage is 100 V, what is the maximum current in the circuit?

Correct A. 0.5 A

B. 1 A

C. 2 A

D. 5 A

Correct Answer: A

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Question 7

A particle of mass 2 kg is attached to a spring with spring cons\tant 100 N/m. If the particle is displaced by 0.1 m from its equilibrium position and released from rest, what is its angular frequency?

A. 1 rad/s

B. 2 rad/s

Correct C. 10 rad/s

D. 20 rad/s

Correct Answer: C

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Question 8

A 3D Gaussian wave function is given by ψ(x,y,z) = e^\( -\( x^2+y^2+z^2 \ \)/2a^2). What is the probability density of finding the particle at a point (x,y,z) in space?

A. e^\( -\( x^2+y^2+z^2 \ \)/a^2)

Correct B. e^\( -\( x^2+y^2+z^2 \ \)/2a^2)

C. e^\( -\( x^2+y^2+z^2 \ \)/4a^2)

D. e^\( -\( x^2+y^2+z^2 \ \)/a^4)

Correct Answer: B

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Question 9

A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 100 V. What is the energy stored in the capacitor?

Correct A. 0.1 J

B. 1 J

C. 10 J

D. 100 J

Correct Answer: A

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Question 10

A gas is contained in a cylinder of volume 10 L at a pressure of 100 kPa. If the temperature is increased by 20 K, what is the new pressure?

A. 120 kPa

B. 140 kPa

Correct C. 160 kPa

D. 180 kPa

Correct Answer: C

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Question 11

A particle of mass 2 kg is attached to a spring with spring cons\tant 100 N/m. It is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the angular frequency of the particle.

A. 1 rad/s

B. 2 rad/s

Correct C. 5 rad/s

D. 10 rad/s

Correct Answer: C

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Question 12

A capacitor of capaci\tance 10 μF is connected across a 20 V DC source. Calculate the charge stored in the capacitor.

A. 0.2 C

B. 0.2 μC

Correct C. 20 μC

D. 200 μC

Correct Answer: C

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Question 13

A 100 Ω resistor is connected in series with a 200 Ω resistor and a 300 Ω resistor. A 12 V DC source is connected across the circuit. Calculate the current flowing through the circuit.

A. 0.2 A

Correct B. 0.4 A

C. 0.6 A

D. 0.8 A

Correct Answer: B

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Question 14

A gas at 300 K and 1 atm expands to 2 atm at cons\tant temperature. Calculate the final volume of the gas.

A. 2 L

Correct B. 4 L

C. 6 L

D. 8 L

Correct Answer: B

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Question 15

A 100 W bulb is connected to a 220 V AC source. Calculate the current flowing through the bulb.

A. 0.4 A

B. 0.6 A

Correct C. 0.8 A

D. 1 A

Correct Answer: C

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