Exam Body

Year

Subject

Paper Type

POST UTME SUMMIT UNIVERSITY 2024 Physics | Objective

Are you preparing for POST UTME SUMMIT UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2024 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 $m$ is confined to a one-dimensional box of length $L$. If the particle is in the ground state, what is the expectation value of its position?

Correct A. \frac{L}{2}

B. \frac{L}{4}

C. \frac{3L}{4}

D. \frac{L}{3}

Correct Answer: A

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

Question 2

A circuit consists of a 12 V battery, a 4 Ω resistor, and an inductor of induc\tance 0.5 H. If the switch is closed at time $t=0$, what is the current in the circuit at $t=1$ s?

A. 5 A

Correct B. 10 A

C. 15 A

D. 20 A

Correct Answer: B

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

Question 3

A wave of frequency 100 Hz and amplitude 0.5 m is traveling along a string. If the string is plucked at the ins\tant the wave is pas\sing through the point $x=0$, what is the displacement of the string at $x=1$ m?

Correct A. 0.25 m

B. 0.5 m

C. 0.75 m

D. 1 m

Correct Answer: A

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

Question 4

A radioactive sample has a half-life of 10 years. If the initial activity is 100 Bq, what is the activity of the sample after 20 years?

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 5

A particle of mass $m$ is moving in a circular orbit of radius $R$ with a speed $v$. If the particle is subject to a centripetal force $F_c$, what is the magnitude of the force?

Correct A. \frac{mv^2}{R}

B. \frac{2mv^2}{R}

C. \frac{3mv^2}{R}

D. \frac{4mv^2}{R}

Correct Answer: A

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

Question 6

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°, what is the angle of deviation?

Correct A. 40°

B. 50°

C. 60°

D. 70°

Correct Answer: A

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

Question 7

A body of mass 2 kg is moving in a circular path with a cons\tant speed of 4 m/s. If the radius of the circular path is 3 m, what is the centripetal force acting on the body?

A. 10 N

B. 20 N

Correct C. 30 N

D. 40 N

Correct Answer: C

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

Question 8

A parallel plate capacitor has a capaci\tance of 10 μF. If a potential difference of 20 V is applied across the plates, what is the charge stored on the capacitor?

A. 200 μC

Correct B. 400 μC

C. 600 μC

D. 800 μC

Correct Answer: B

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

Question 9

A photon has an energy of 2.5 eV. If the wavelength of the photon is 500 nm, what is the momentum of the photon?

A. 10^-25 kg m/s

B. 10^-24 kg m/s

Correct C. 10^-23 kg m/s

D. 10^-22 kg m/s

Correct Answer: C

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

Question 10

A car is traveling at a speed of 60 km/h. If the driver applies the brakes and the car comes to a stop in 10 s, what is the acceleration of the car?

A. -6 m/s^2

B. -8 m/s^2

C. -10 m/s^2

Correct D. -12 m/s^2

Correct Answer: D

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

Question 11

A uniform solid sphere of radius R and mass M is placed at the origin. A point charge q is placed at a dis\tance r from the center of the sphere. What is the electric potential at the surface of the sphere?

A. kq/R

B. kq/(2R)

Correct C. kq/$ R - r $

D. kq/$ R + r $

Correct Answer: C

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

Question 12

A particle of mass m is moving in a circular orbit of radius r under the influence of a central force F(r) = -k/r^2. What is the angular momentum of the particle?

A. mk/r

B. mk^2/r

Correct C. \sqrt{mk^2/r}

D. mk^2/r^2

Correct Answer: C

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

Question 13

A circuit consists of a resistor R, an inductor L, and a capacitor C connected in series. The circuit is driven by a voltage source V(t) = V_0 \sin$ \omega t $. What is the impedance of the circuit?

A. R

B. \sqrt{R^2 + \omega^2 L^2}

Correct C. \sqrt{R^2 + $ \omega L - 1/\omega C $^2}

D. \sqrt{R^2 + 1/\omega^2 C^2}

Correct Answer: C

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

Question 14

A wave function \psi(x) = Ae^{ikx} is a solution to the time-indep\endent Schrödinger equation for a particle of mass m in a one-dimensional potential V(x). What is the energy of the particle?

Correct A. \hbar^2 k^2/2m

B. \hbar^2 k^2/m

C. \hbar k^2/2m

D. \hbar k^2/m

Correct Answer: A

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

Question 15

A projectile is launched from the origin with an initial velocity v_0 at an angle \theta above the horizontal. What is the time of flight of the projectile?

A. v_0 \sin \theta / g

Correct B. 2v_0 \sin \theta / g

C. v_0 \cos \theta / g

D. 2v_0 \cos \theta / g

Correct Answer: B

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

Question 16

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?

Correct A. 6 m/s^2

B. 12 m/s^2

C. 18 m/s^2

D. 24 m/s^2

Correct Answer: A

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

Question 17

A lens of focal length 20 cm is used to form an image of an object placed 30 cm from the lens. What is the magnification of the image?

Correct A. -2/3

B. -1/2

C. -1/3

D. 1/2

Correct Answer: A

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

Question 18

A body of mass 5 kg is moving in a straight line with a velocity of 10 m/s. If it is subjected to a force of 20 N, what is the acceleration of the body?

Correct A. 4 m/s^2

B. 8 m/s^2

C. 12 m/s^2

D. 16 m/s^2

Correct Answer: A

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

Question 19

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?

Correct A. 10°

B. 20°

C. 30°

D. 40°

Correct Answer: A

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

Question 20

A particle of mass 3 kg is moving in a circular path of radius 4 m with a cons\tant speed of 6 m/s. If the particle is subjected to a centripetal force of 18 N, what is the magnitude of the acceleration of the particle?

Correct A. 6 m/s^2

B. 12 m/s^2

C. 18 m/s^2

D. 24 m/s^2

Correct Answer: A

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

Question 21

A lens of focal length 15 cm is used to form an image of an object placed 25 cm from the lens. What is the magnification of the image?

Correct A. -3/5

B. -2/3

C. -1/2

D. 1/2

Correct Answer: A

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

Question 22

A body of mass 4 kg is moving in a straight line with a velocity of 8 m/s. If it is subjected to a force of 24 N, what is the acceleration of the body?

Correct A. 6 m/s^2

B. 12 m/s^2

C. 18 m/s^2

D. 24 m/s^2

Correct Answer: A

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

Question 23

A ray of light passes from air into a glass of re\fractive index 1.8. If the angle of incidence is 40°, what is the angle of re\fraction?

A. 20°

B. 30°

C. 40°

D. 50°

Correct Answer: VIEW ANSWER

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

Question 24

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 angular velocity of the particle?

A. 2 rad/s

Correct B. 4 rad/s

C. 6 rad/s

D. 8 rad/s

Correct Answer: B

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

Question 25

A 10 μF capacitor is connected in series with a 20 Ω resistor and a 50 V battery. If the switch is closed at time t = 0, what is the current in the circuit at time t = 5 s?

A. 0.5 A

Correct B. 1 A

C. 2 A

D. 3 A

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