Exam Body

Year

Subject

Paper Type

POST UTME BOWEN UNIVERSITY 2017 Physics | Objective

Are you preparing for POST UTME BOWEN UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2017 Physics (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1

A parallel plate capacitor has plates of area 0.02 m^2 and separation 0.005 m. If the capaci\tance is 5.0 nF, what is the value of the dielectric cons\tant?

A. 1.0

Correct B. 2.0

C. 3.0

D. 4.0

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 1.0 L to 2.0 L against a cons\tant external pressure of 1.0 atm. What is the work done by the gas?

A. -1.0 J

B. 0.0 J

Correct C. 1.0 J

D. 2.0 J

Correct Answer: C

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

Question 3

A circuit consists of a 12 V battery, a 4 ohm resistor, and a 6 ohm resistor connected in series. What is the current flowing through the 4 ohm resistor?

A. 0.5 A

Correct B. 1.0 A

C. 1.5 A

D. 2.0 A

Correct Answer: B

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

Question 4

A projectile is launched at an angle of 60 degrees above the horizontal with an initial velocity of 20 m/s. What is the maximum height reached by the projectile?

A. 10.0 m

B. 15.0 m

Correct C. 20.0 m

D. 25.0 m

Correct Answer: C

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

Question 5

A magnetic field is produced by a current-carrying wire. If the current is 2.0 A and the length of the wire is 0.5 m, what is the magnetic field strength at a dis\tance of 0.2 m from the wire?

A. 0.01 T

B. 0.02 T

Correct C. 0.03 T

D. 0.04 T

Correct Answer: C

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

Question 6

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.

A. 10 Ω

B. 20 Ω

Correct C. 30 Ω

D. 40 Ω

Correct Answer: C

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

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. If the particle is subject to a centripetal force of 10 N, calculate 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

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

Question 8

A 100 W bulb is connected to a 230 V AC source. If the power factor of the bulb is 0.8, calculate the current drawn by the bulb.

A. 0.5 A

B. 1 A

Correct C. 1.5 A

D. 2 A

Correct Answer: C

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

Question 9

A wave of frequency 100 Hz and wavelength 2 m is traveling through a medium. If the speed of the wave is 300 m/s, calculate the amplitude of the wave.

A. 0.1 m

B. 0.2 m

C. 0.3 m

Correct D. 0.4 m

Correct Answer: D

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

Question 10

A particle of mass 0.2 kg is moving in a circular path of radius 1 m with a speed of 3 m/s. If the particle is subject to a centripetal force of 5 N, calculate the kinetic energy of the particle.

A. 1 J

B. 2 J

Correct C. 3 J

D. 4 J

Correct Answer: C

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

Question 11

A 2.5 m long wire of resis\tance 3.5 Ω is connected in series with a 9 V battery. If the current flowing through the wire is 0.5 A, what is the potential difference across the wire?

A. 2.25 V

Correct B. 3.5 V

C. 4.5 V

D. 6.75 V

Correct Answer: B

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

Question 12

A particle of mass 0.5 kg is moving in a circular path of radius 2 m with a cons\tant speed of 4 m/s. What is the magnitude of the centripetal force acting on the particle?

A. 2 N

B. 4 N

Correct C. 6 N

D. 8 N

Correct Answer: C

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

Question 13

A 1000 W electric heater is connected to a 220 V power supply. If the resis\tance of the heater is 10 Ω, what is the current flowing through the heater?

A. 0.5 A

Correct B. 1 A

C. 2 A

D. 4 A

Correct Answer: B

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

Question 14

A 5 kg block is moving with a velocity of 10 m/s. If the block is brought to rest in 2 s, what is the magnitude of the force acting on the block?

A. 5 N

B. 10 N

Correct C. 20 N

D. 50 N

Correct Answer: C

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

Question 15

A 2 m long wire of resis\tance 2 Ω is connected in series with a 6 V battery. If the current flowing through the wire is 1 A, what is the potential difference across the wire?

A. 2 V

B. 3 V

C. 4 V

Correct D. 6 V

Correct Answer: D

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. The wave function of the particle is given by ψ(x) = √\( 2/L \) * \sin\( nπx/L \), where n is a positive integer. What is the expectation value of the position operator x?

Correct A. L/2

B. nπL/2

C. nπL/2 + L/2

D. nπL/2 - L/2

Correct Answer: A

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

Question 17

A magnetic field B is directed along the z-axis. A current I flows through a wire loop of radius r, placed in the x-y plane. What is the magnetic flux Φ through the loop?

Correct A. Bπr^2

B. Bπr^2 \cos(θ)

C. Bπr^2 \sin(θ)

D. Bπr^2 \tan(θ)

Correct Answer: A

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

Question 18

A capacitor C is connected to a battery of voltage V. The capacitor is initially uncharged. What is the charge Q on the capacitor after a time t?

A. CV

Correct B. CV\( 1 - e^{-t/RC} \)

C. CV\( 1 + e^{-t/RC} \)

D. CV\( 1 - e^{t/RC} \)

Correct Answer: B

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

Question 19

A radioactive sample decays with a half-life of T1/2. What is the activity A of the sample after a time t?

Correct A. A0 e^{-λt}

B. A0 e^{λt}

C. A0 + λt

D. A0 - λt

Correct Answer: A

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

Question 20

A particle of mass m is moving in a circular orbit of radius r with a speed v. What is the centripetal force F_c acting on the particle?

Correct A. \( m v^2 \) / r

B. m v^2

C. m v^3

D. m v^4

Correct Answer: A

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

Question 21

A block of mass 5 kg is attached to a spring with a spring cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position and released from rest, calculate the maximum speed of the block as it passes through the equilibrium position.

A. 2 m/s

B. 4 m/s

Correct C. 6 m/s

D. 8 m/s

Correct Answer: C

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

Question 22

A radioactive sample has an initial activity of 100 Bq. If the half-life of the sample is 10 minutes, calculate the activity of the sample after 30 minutes.

Correct A. 12.5 Bq

B. 25 Bq

C. 50 Bq

D. 100 Bq

Correct Answer: A

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

Question 23

A 10 μF capacitor is connected in series with a 20 Ω resistor and a 50 V battery. Calculate the current flowing through the circuit.

A. 0.25 A

Correct B. 0.5 A

C. 1 A

D. 2 A

Correct Answer: B

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

Question 24

A 100 V AC source is connected in series with a 20 Ω resistor and a 10 μF capacitor. Calculate the impedance of the circuit.

A. 20 Ω

B. 22 Ω

Correct C. 24 Ω

D. 26 Ω

Correct Answer: C

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

Question 25

A 5 μF capacitor is connected in parallel with a 10 μF capacitor. Calculate the equivalent capaci\tance of the circuit.

A. 5 μF

B. 10 μF

Correct C. 15 μF

D. 20 μF

Correct Answer: C

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