POST UTME SUMMIT UNIVERSITY 2021 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A light ray passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 25°
C. 30°
D. 35°
Question 2
A sound wave with a frequency of 200 Hz and an amplitude of 0.5 m is traveling through a medium with a speed of 340 m/s. What is the intensity of the sound wave?
A. 0.1 W/m^2
B. 0.5 W/m^2
C. 1 W/m^2
D. 5 W/m^2
Question 3
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 uniform magnetic field of 2 T directed perp\endicular to the plane of the circular path, what is the magnitude of the magnetic force acting on the particle?
A. 0.16 N
B. 0.32 N
C. 0.64 N
D. 1.28 N
Question 4
A particle of mass $m$ is moving in a circular orbit of radius $r$ under the influence of a central force given by $F(r) = k/r^2$. If the particle's speed is $v$, what is the angular momentum of the particle?
A. \frac{mv^2r}{k}
B. \frac{mv^2}{k}
C. \frac{mkr}{v^2}
D. \frac{mv^2}{r}
Question 5
A particle of mass 0.5 kg is moving in a circular path of radius 0.2 m with a cons\tant speed of 2.0 m/s. Calculate the magnitude of the force acting on the particle.
A. 2.0 N
B. 4.0 N
C. 6.0 N
D. 8.0 N
Question 6
A light ray passes from air into a glass slab of re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 25°
C. 30°
D. 35°
Question 7
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the circuit?
A. 1.5 A
B. 2 A
C. 2.5 A
D. 3 A
Question 8
A block of mass $m$ is attached to a horizontal spring with spring cons\tant $k$. If the block is displaced by a dis\tance $x$ and released from rest, what is the maximum speed of the block?
A. \sqrt{\frac{kx^2}{m}}
B. \sqrt{\frac{mx^2}{k}}
C. \sqrt{\frac{k}{mx^2}}
D. \sqrt{\frac{m}{kx^2}}
Question 9
A particle of mass $m$ is moving in a one-dimensional potential $V(x) = k|x|$. If the particle's energy is $E$, what is the probability that the particle is in the region $x > 0$?
A. \frac{1}{2}\left\( 1 + \frac{E}{k}\right \)
B. \frac{1}{2}\left\( 1 - \frac{E}{k}\right \)
C. \frac{1}{2}\left\( 1 + \frac{k}{E}\right \)
D. \frac{1}{2}\left\( 1 - \frac{k}{E}\right \)
Question 10
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the circuit?
A. 1.5 A
B. 2.0 A
C. 2.5 A
D. 3.0 A
Question 11
A beam of light passes from air into a medium with re\fractive index 1.5. If the angle of incidence is 30°, what is the angle of re\fraction?
A. 20°
B. 25°
C. 30°
D. 35°
Question 12
A 5 kg block 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. Assuming the block undergoes simple harmonic motion, what is the maximum speed of the block?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 13
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. What is the current flowing through the circuit?
A. 1.5 A
B. 2 A
C. 2.5 A
D. 3 A
Question 14
A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. If the speed of sound is 340 m/s, 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 2.0 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 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. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s

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