POST UTME ACHIEVERS UNIVERSITY 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A block of mass 5 kg is susp\ended from a spring with a spring cons\tant of 100 N/m. What is the frequency of oscillation?
A. 0.5 Hz
B. 1 Hz
C. 2 Hz
D. 5 Hz
Question 2
A capacitor has a capaci\tance of 0.02 F and is connected to a 12 V battery. Calculate the charge stored.
A. 0.24 C
B. 0.26 C
C. 0.28 C
D. 0.30 C
Question 3
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?
A. 20°
B. 30°
C. 40°
D. 50°
Question 4
A liquid of density 1000 kg/m^3 is flowing through a pipe of radius 0.1 m. What is the pressure at the center of the pipe?
A. 1000 Pa
B. 2000 Pa
C. 5000 Pa
D. 10000 Pa
Question 5
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 2.5 x 10^-6 F, what is the charge on the plates when the potential difference between them is 100 V?
A. 0.25 C
B. 0.125 C
C. 0.5 C
D. 1 C
Question 6
A ray 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.
A. 20°
B. 30°
C. 40°
D. 50°
Question 7
A wave has a frequency of 100 Hz and a wavelength of 0.5 m. Calculate the speed of the wave.
A. 50 m/s
B. 100 m/s
C. 150 m/s
D. 200 m/s
Question 8
A particle is projected at an angle of 60 degrees to the horizontal with an initial velocity of 20 m/s. What is the time of flight?
A. 2 seconds
B. 4 seconds
C. 6 seconds
D. 8 seconds
Question 9
A person is s\tanding 10 m away from a stationary source of sound that is producing a 400 Hz sound wave. If the speed of sound is 340 m/s, what is the time interval between successive compressions of the sound wave?
A. 1.0 ms
B. 2.0 ms
C. 2.5 ms
D. 5.0 ms
Question 10
A thermodynamic system undergoes a process from state A to state B. The initial temperature is 300 K and the final temperature is 400 K. If the change in entropy is 50 J/K, what is the change in internal energy?
A. 10000 J
B. 5000 J
C. 2000 J
D. 1000 J
Question 11
A radioactive subs\tance has a half-life of 5 years. If 100 grams of the subs\tance is initially present, how many grams will remain after 10 years?
A. 12.5 grams
B. 25 grams
C. 50 grams
D. 100 grams
Question 12
A gas has a pressure of 2 atm and a volume of 0.5 m^3. If the temperature is increased by 20 K, calculate the new pressure.
A. 2.5 atm
B. 3 atm
C. 3.5 atm
D. 4 atm
Question 13
A magnetic field of strength 0.5 T is directed along the z-axis. A current of 2 A flows in a circular loop of radius 0.1 m. What is the magnitude of the magnetic moment of the loop?
A. 0.01 A m^2
B. 0.1 A m^2
C. 0.5 A m^2
D. 1 A m^2
Question 14
A radioactive sample undergoes \alpha decay, emitting an \alpha particle with a mass of 4 u and a charge of +2e. If the sample's initial mass is 200 g, what is the mass of the daughter nucleus after 3 half-lives?
A. 25 g
B. 50 g
C. 100 g
D. 200 g
Question 15
A capacitor of capaci\tance 10^-6 F is charged to a potential difference of 100 V. What is the energy stored in the capacitor?
A. 0.01 J
B. 0.1 J
C. 1 J
D. 10 J

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: