POST UTME BABCOCK UNIVERSITY 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A beam of light is incident on a mirror at an angle of 45°. If the mirror is a plane mirror, calculate the angle of reflection.
A. 45°
B. 90°
C. 135°
D. 180°
Question 2
A circuit consists of a resistor $R_1 = 10\,\Omega$, an inductor $L = 5\,\text{H}$, and a capacitor $C = 10^{-6}\,\text{F}$. The circuit is driven by a voltage source $V_0 = 10\,\text{V}$ with a frequency $f = 50\,\text{Hz}$. What is the impedance of the circuit?
A. 10\,\Omega
B. 50\,\Omega
C. 100\,\Omega
D. 200\,\Omega
Question 3
A lens has a focal length of 20 cm. If an object is placed 30 cm in front of the lens, calculate the image dis\tance.
A. 10 cm
B. 20 cm
C. 30 cm
D. 40 cm
Question 4
A block of mass 5 kg is attached to a horizontal spring with a force cons\tant of 200 N/m. The block is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, calculate the maximum speed of the block.
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 5
A simple harmonic motion has an amplitude $A = 2\,\text{m}$ and a frequency $f = 5\,\text{Hz}$. What is the angular frequency of the motion?
A. 10\,\text{rad/s}
B. 20\,\text{rad/s}
C. 30\,\text{rad/s}
D. 40\,\text{rad/s}
Question 6
A 2 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. If the block is displaced by 0.1 m from its equilibrium position and released from rest, what is its maximum speed?
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 7
A Doppler effect experiment involves a source of sound moving at a speed $v_s = 20\,\text{m/s}$ and an observer moving at a speed $v_o = 10\,\text{m/s}$. The frequency of the sound emitted by the source is $f_0 = 100\,\text{Hz}$. What is the frequency heard by the observer?
A. 90\,\text{Hz}
B. 100\,\text{Hz}
C. 110\,\text{Hz}
D. 120\,\text{Hz}
Question 8
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 experiences a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 10 m/s^2
B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 9
A ray of light passes from air into a glass block with a re\fractive index of 1.5. If the angle of incidence is 30°, calculate the angle of re\fraction.
A. 20°
B. 25°
C. 30°
D. 35°
Question 10
A particle of mass 2 kg is moving in a circular path with a radius of 1 m. If the particle has a speed of 4 m/s, calculate the centripetal force acting on the particle.
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 11
A sound wave with frequency $f$ and amplitude $A$ is traveling through a medium with speed $v$. What is the wavelength of the sound wave?
A. \frac{v}{f}
B. \frac{f}{v}
C. \frac{A}{f}
D. \frac{v}{A}
Question 12
A sound wave with frequency 200 Hz and amplitude 0.5 m is traveling through a medium with speed 340 m/s. If the wave is reflected off a rigid surface, what is the intensity of the reflected wave?
A. 100 W/m^2
B. 200 W/m^2
C. 300 W/m^2
D. 400 W/m^2
Question 13
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 8.0 nF, what is the charge stored when the potential difference between the plates is 12 V?
A. 96 μC
B. 192 μC
C. 288 μC
D. 384 μC
Question 14
A sound wave with a frequency of 200 Hz is traveling through a medium with a speed of 340 m/s. If the wavelength of the sound wave is 1.7 m, calculate the amplitude of the wave.
A. 0.1 m
B. 0.2 m
C. 0.3 m
D. 0.4 m
Question 15
A parallel plate capacitor has a capaci\tance of 10 μF and is charged to a potential difference of 20 V. If the plates are then separated by a dis\tance of 0.5 m, calculate the new capaci\tance of the capacitor.
A. 2 μF
B. 5 μF
C. 10 μF
D. 20 μF

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: