POST UTME SUMMIT UNIVERSITY 2017 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A lens of focal length 0.2 m is used to form an image of an object 0.5 m away. If the object is moved 0.1 m closer to the lens, what is the new image dis\tance?
A. 0.3 m
B. 0.4 m
C. 0.5 m
D. 0.6 m
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 force of 12 N, what is the angle between the velocity vector and the radius vector at the ins\tant when the particle is at the top of its circular path?
A. π/2
B. π/4
C. 3π/4
D. 5π/4
Question 3
A simple harmonic motion has a time period of 2 s and an amplitude of 5 m. If the particle is at the extreme position at t = 0, what is the equation of motion?
A. ( x(t) = 5 \sin left\( \frac{πt}{1} \right \) )
B. ( x(t) = 5 \cos left\( \frac{πt}{1} \right \) )
C. ( x(t) = 5 \sin left\( \frac{πt}{2} \right \) )
D. ( x(t) = 5 \cos left\( \frac{πt}{2} \right \) )
Question 4
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 8.0 x 10^-12 F, what is the charge on the plates?
A. 1.6 x 10^-11 C
B. 3.2 x 10^-11 C
C. 4.8 x 10^-11 C
D. 6.4 x 10^-11 C
Question 5
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in parallel. What is the total resis\tance of the circuit?
A. 2 Ω
B. 3 Ω
C. 4 Ω
D. 6 Ω
Question 6
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 0.1 H inductor in series. If the circuit is closed at time t = 0, what is the current in the circuit at time t = 0.1 s?
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 7
A photon has an energy of 2.5 eV. What is its momentum?
A. 1.6 x 10^-24 kg m/s
B. 3.2 x 10^-24 kg m/s
C. 4.8 x 10^-24 kg m/s
D. 6.4 x 10^-24 kg m/s
Question 8
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. The capaci\tance is 2.5 nF. If a potential difference of 10 V is applied across the plates, calculate the energy stored in the capacitor.
A. 1.25 \times 10^{-7} J
B. 2.5 \times 10^{-7} J
C. 5.0 \times 10^{-7} J
D. 1.0 \times 10^{-6} J
Question 9
A beam of light passes through a prism and is re\fracted at an angle of 30°. If the angle of incidence is 20°, what is the angle of re\fraction?
A. 20°
B. 30°
C. 40°
D. 50°
Question 10
A block of mass 10 kg is placed on a frictionless surface and is connected to a spring of spring cons\tant 100 N/m. If the block is displaced by 0.5 m from its equilibrium position and released, what is the maximum speed of the block?
A. 1 m/s
B. 2 m/s
C. 3 m/s
D. 4 m/s
Question 11
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. 30°
C. 40°
D. 50°
Question 12
A uniform magnetic field of strength 2 T is applied to a coil of radius 0.1 m. If the coil has 100 turns and a resis\tance of 10 Ω, what is the induced emf in the coil when the magnetic flux through it changes from 0 to 0.5 Wb in 0.1 s?
A. 5 V
B. 10 V
C. 20 V
D. 50 V
Question 13
A beam 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?
A. 10°
B. 20°
C. 30°
D. 40°
Question 14
A block of mass 2 kg is attached to a horizontal spring with a spring cons\tant of 100 N/m. If the block is displaced by 0.1 m from its equilibrium position and released, calculate the maximum speed of the block.
A. 1.0 m/s
B. 2.0 m/s
C. 3.0 m/s
D. 4.0 m/s
Question 15
A s\tanding wave is formed by a string fixed at both \ends. If the wavelength of the wave is 2 m, what is the length of the string?
A. 1 m
B. 2 m
C. 3 m
D. 4 m

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