Exam Body

Year

Subject

Paper Type

POST UTME DELSU 2025 Physics | Objective

Are you preparing for POST UTME DELSU 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 block of mass 10 kg is susp\ended from a spring with spring cons\tant 100 N/m. If 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. 5 m/s

Correct B. 10 m/s

C. 15 m/s

D. 20 m/s

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 2

A gas at 300 K expands from 1 L to 2 L against a cons\tant external pressure of 2 atm. What is the work done by the gas?

A. -200 J

Correct B. -400 J

C. -600 J

D. -800 J

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 3

A particle of mass 5 kg is moving in a circular path with a radius of 2 m. If the particle has a speed of 10 m/s, what is the magnitude of the centripetal acceleration?

A. 10 m/s^2

B. 20 m/s^2

Correct C. 30 m/s^2

D. 40 m/s^2

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 4

A capacitor consists of two parallel plates separated by a dis\tance of 1 mm. If the capaci\tance is 10 μF, what is the charge stored on the capacitor when a potential difference of 5 V is applied?

A. 50 μC

Correct B. 100 μC

C. 150 μC

D. 200 μC

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 5

A wave has a frequency of 100 Hz and a wavelength of 0.1 m. What is the speed of the wave?

A. 10 m/s

B. 20 m/s

Correct C. 30 m/s

D. 40 m/s

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 6

A parallel plate capacitor has plates of area 0.01 m^2 and separation 0.001 m. The capaci\tance is 1.5 nF. If a potential difference of 10 V is applied across the plates, calculate the charge stored on the capacitor.

A. 15 \mu C

Correct B. 30 \mu C

C. 45 \mu C

D. 60 \mu C

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

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. Calculate the magnitude of the force acting on the particle.

A. 12 N

B. 24 N

Correct C. 36 N

D. 48 N

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 8

A wave has a frequency of 50 Hz and a wavelength of 0.05 m. Calculate the speed of the wave.

A. 2.5 m/s

B. 5 m/s

Correct C. 10 m/s

D. 20 m/s

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 9

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, calculate the current flowing through the circuit.

A. 0.4 A

B. 0.6 A

Correct C. 0.8 A

D. 1 A

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 10

A sound wave has a frequency of 200 Hz and a speed of 340 m/s. Calculate the wavelength of the wave.

A. 0.0017 m

B. 0.0018 m

Correct C. 0.0019 m

D. 0.002 m

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 11

A 5 kg block of ice at 0°C is placed in a 10°C water bath. Assuming the specific heat capacity of ice is 2090 J/(kg°C) and the specific heat capacity of water is 4186 J/(kg°C), calculate the time it takes for the ice to melt completely.

A. 10 minutes

B. 20 minutes

Correct C. 30 minutes

D. 40 minutes

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 12

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, calculate the angle through which the particle will rotate in 5 seconds.

A. 10°

B. 20°

Correct C. 30°

D. 40°

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 13

A capacitor of capaci\tance 10 μF is connected in series with a resistor of resis\tance 20 Ω. If a voltage of 50 V is applied across the circuit, calculate the current flowing through the circuit.

A. 0.25 A

Correct B. 0.5 A

C. 0.75 A

D. 1 A

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 14

A beam of light is incident on a prism at an angle of 30°. If the re\fractive index of the prism is 1.5, calculate the angle of re\fraction.

A. 20°

B. 30°

Correct C. 40°

D. 50°

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 15

A quantum particle of mass 1 kg is confined to a one-dimensional box of length 2 m. If the particle is in its ground state, calculate the energy of the particle.

A. 10^-34 J

B. 10^-33 J

Correct C. 10^-32 J

D. 10^-31 J

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 16

A particle of mass m is confined to a one-dimensional box of length L. U\sing the time-indep\endent Schrödinger equation, derive an expression for the energy eigenvalues of the particle.

Correct A. E_n = \frac{n^2 \pi^2 \hbar^2}{2mL^2}

B. E_n = \frac{n^2 \pi^2 \hbar^2}{mL^2}

C. E_n = \frac{n^2 \pi^2 \hbar^2}{2mL}

D. E_n = \frac{n^2 \pi^2 \hbar^2}{mL}

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 17

A block of mass m is placed on a frictionless surface and connected to a horizontal spring of spring cons\tant k. The block is displaced by a dis\tance x from its equilibrium position and released from rest. U\sing the equation of motion, derive an expression for the angular frequency of the block.

Correct A. \omega = \sqrt{\frac{k}{m}}

B. \omega = \sqrt{\frac{m}{k}}

C. \omega = \sqrt{\frac{k}{m^2}}

D. \omega = \sqrt{\frac{m^2}{k}}

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 18

A gas is contained in a cylinder of volume V and is heated from temperature T1 to temperature T2. U\sing the ideal gas law, derive an expression for the change in pressure of the gas.

Correct A. \Delta P = \frac{nR\Delta T}{V}

B. \Delta P = \frac{nRT1}{V}

C. \Delta P = \frac{nRT2}{V}

D. \Delta P = \frac{nR\( T1 - T2 \)}{V}

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 19

A projectile is launched from the origin with an initial velocity v0 at an angle θ to the horizontal. U\sing the equations of motion, derive an expression for the time of flight of the projectile.

Correct A. \frac{2v_0 \sin \theta}{g}

B. \frac{2v_0 \cos \theta}{g}

C. \frac{v_0 \sin \theta}{g}

D. \frac{v_0 \cos \theta}{g}

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 20

A circuit consists of a resistor R, an inductor L, and a capacitor C connected in series. U\sing Kirchhoff's laws, derive an expression for the impedance of the circuit.

Correct A. \sqrt{R^2 + \( \omega L - \frac{1}{\omega C} \)^2}

B. \sqrt{R^2 + \( \omega L + \frac{1}{\omega C} \)^2}

C. \sqrt{R^2 + \( \omega L - \frac{1}{\omega C} \)}

D. \sqrt{R^2 + \( \omega L + \frac{1}{\omega C} \)}

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 21

A 2.5 mH inductor is connected in series with a 10 Ω resistor and a 20 V AC source. If the frequency of the source is 50 Hz, calculate the impedance of the circuit u\sing the formula \( Z = \sqrt{R^2 + X_L^2} \), where \( X_L = 2pi f L \).

A. 14.14 Ω

Correct B. 15.62 Ω

C. 17.32 Ω

D. 18.85 Ω

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 22

A particle of mass 0.5 kg is attached to a spring with a spring cons\tant of 100 N/m. If the particle is displaced by 2 m from its equilibrium position and released from rest, calculate the frequency of oscillation u\sing the equation \( f = \frac{1}{2pi} \sqrt{\frac{k}{m}} \).

A. 0.25 Hz

Correct B. 0.5 Hz

C. 0.75 Hz

D. 1 Hz

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 23

A beam of light passes from air into a glass of re\fractive index 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction u\sing Snell's law \( n_1 \sin \theta_1 = n_2 \sin \theta_2 \).

A. 20°

Correct B. 22.5°

C. 25°

D. 27.5°

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 24

A 100 W light bulb is connected to a 220 V AC source. If the power factor of the bulb is 0.8, calculate the current drawn by the bulb u\sing the formula \( P = VI \cos phi \), where ( phi ) is the power factor.

A. 0.45 A

Correct B. 0.5 A

C. 0.55 A

D. 0.6 A

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Question 25

A particle of mass 1 kg is moving in a circular path of radius 2 m with a speed of 4 m/s. If the particle is subject to a centripetal force of 10 N, calculate the time period of the motion u\sing the equation \( T = \frac{2pi r}{v} \).

A. 2.5 s

Correct B. 3 s

C. 3.5 s

D. 4 s

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Help others prepare! Share this practice hub:

Chat with Support