POST UTME AFE BABALOLA UNIVERSITY 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A simple p\endulum consists of a point mass attached to a massless string of length 1 m. If the p\endulum is displaced by an angle of 30 degrees from its equilibrium position and released, what is the magnitude of the tension in the string?
A. 10 N
B. 12 N
C. 15 N
D. 18 N
Question 2
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 acceleration of 2 m/s^2, what is the magnitude of the net force acting on the particle?
A. 10 N
B. 12 N
C. 15 N
D. 18 N
Question 3
A coil of wire has a resis\tance of 10 ohms and an induc\tance of 0.1 H. If a current of 2 A is passed through the coil, what is the magnitude of the induced emf?
A. 0.2 V
B. 0.4 V
C. 0.6 V
D. 0.8 V
Question 4
A wave with a frequency of 50 Hz and a wavelength of 2 m is traveling through a medium. If the wave is reflected from a fixed \end, what is the frequency of the reflected wave?
A. 25 Hz
B. 50 Hz
C. 75 Hz
D. 100 Hz
Question 5
A simple harmonic motion has a frequency of 20 Hz and an amplitude of 0.5 m. What is the angular frequency of the motion?
A. 20 \pi rad/s
B. 30 \pi rad/s
C. 40 \pi rad/s
D. 50 \pi rad/s
Question 6
A ray of light passes through a prism and is re\fracted at an angle of 30°. If the angle of incidence is 20°, calculate the angle of re\fraction.
A. 10°
B. 20°
C. 30°
D. 40°
Question 7
A particle of mass $m$ is confined to a one-dimensional box of length $L$. The wave function of the particle is given by $psi(x) = \sqrt{\frac{2}{L}} \sinleft\( \frac{npi x}{L}\right \)$, where $n$ is a positive integer. What is the expectation value of the position operator for this particle?
A. 0
B. \frac{L}{2}
C. L
D. \frac{n\pi L}{2}
Question 8
A simple harmonic motion has a frequency of 10 Hz and an amplitude of 2 m. If the motion is started at t = 0, what is the position of the particle at t = 0.1 s?
A. 0.2 m
B. 0.4 m
C. 0.6 m
D. 0.8 m
Question 9
A gas has a volume of 2 m^3 and a pressure of 100 kPa. If the temperature of the gas is increased by 20 K, what is the new pressure of the gas?
A. 90 kPa
B. 100 kPa
C. 110 kPa
D. 120 kPa
Question 10
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 11
A block of mass 5 kg is attached to a horizontal, massless spring with a force cons\tant of 200 N/m. The block is displaced by 2 m from its equilibrium position and released from rest. What is the maximum speed of the block as it oscillates?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 12
A car travels from point A to point B with an average speed of 60 km/h. If the dis\tance between the two points is 240 km, what is the time taken by the car to travel from point A to point B?
A. 4 hours
B. 6 hours
C. 8 hours
D. 10 hours
Question 13
A capacitor consists of two parallel plates, each of area 0.1 m^2, separated by a dis\tance of 0.01 m. The plates are charged to a potential difference of 10 V. What is the capaci\tance of the capacitor?
A. 0.01 F
B. 0.02 F
C. 0.03 F
D. 0.04 F
Question 14
A radioactive sample decays from 100 g to 50 g in 10 years. What is the half-life of the sample?
A. 5 years
B. 10 years
C. 15 years
D. 20 years
Question 15
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 acceleration of 2 m/s^2, what is the magnitude of the net force acting on the particle?
A. 8 N
B. 12 N
C. 16 N
D. 20 N

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