POST UTME UNIPORT 2018 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A light source emits light of wavelength 500 nm. If the light is re\fracted through a prism, what is the angle of deviation?
A. 10°
B. 20°
C. 30°
D. 40°
Question 2
A circuit consists of a 12 V battery, a 4 Ω resistor, and an inductor with induc\tance 2 H. The circuit is connected at time t = 0 s. Calculate the current in the circuit at time t = 1 s.
A. 0.5 A
B. 1.0 A
C. 1.5 A
D. 2.0 A
Question 3
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 2 Ω resistor connected in series. What is the current flowing through the circuit?
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 4
A particle of mass 1.0 kg is moving in a circular path with a radius of 2.0 m. If the particle has a speed of 4.0 m/s, what is the magnitude of the centripetal acceleration?
A. 0.5 m/s²
B. 1.0 m/s²
C. 1.5 m/s²
D. 2.0 m/s²
Question 5
A 100 W light bulb is connected to a 220 V power source. If the bulb is used for 5 hours a day, how much electricity will it consume in a month?
A. 120 kWh
B. 150 kWh
C. 180 kWh
D. 200 kWh
Question 6
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. If the current in the circuit is 2 A, what is the voltage drop across the 6 Ω resistor?
A. 6 V
B. 8 V
C. 10 V
D. 12 V
Question 7
A capacitor consists of two parallel plates, each of area 0.1 m^2, separated by a dis\tance of 0.01 m. If the potential difference between the plates is 10 V, what is the capaci\tance of the capacitor?
A. 0.01 F
B. 0.1 F
C. 1 F
D. 10 F
Question 8
A capacitor consists of two parallel plates, each of area 0.2 m^2, separated by a dis\tance of 0.02 m. If the potential difference between the plates is 20 V, what is the capaci\tance of the capacitor?
A. 0.02 F
B. 0.2 F
C. 2 F
D. 20 F
Question 9
A 10 µF current is flowing in a circuit with a resis\tance of 20 Ω. What is the power dissipated in the circuit?
A. 0.2 W
B. 0.4 W
C. 0.6 W
D. 0.8 W
Question 10
A spring with spring cons\tant $k$ is stretched by a dis\tance $x$. What is the magnitude of the force exerted on the spring?
A. kx
B. \frac{k}{x}
C. \frac{x}{k}
D. k - x
Question 11
A gas is compressed from an initial volume of 2 m^3 to a final volume of 1 m^3 at a cons\tant temperature of 300 K. Calculate the work done on the gas in Joules.
A. -600 J
B. -300 J
C. 300 J
D. 600 J
Question 12
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. What is the magnitude of the centripetal force acting on the particle?
A. 16 N
B. 32 N
C. 48 N
D. 64 N
Question 13
A wave of wavelength $\lambda$ and frequency $f$ is traveling through a medium with speed $v$. What is the magnitude of the wave's momentum?
A. \frac{hv}{c}
B. \frac{h}{\lambda}
C. \frac{f}{v}
D. \frac{v}{f}
Question 14
A particle of mass 2 kg is attached to a spring with spring cons\tant 10 N/m. The particle is displaced by 0.2 m from its equilibrium position and released from rest. Assuming the motion is simple harmonic, calculate the kinetic energy of the particle at time t = 0.5 s.
A. 0.5 J
B. 1.0 J
C. 1.5 J
D. 2.0 J
Question 15
A particle of mass $m$ is moving in a circular path of radius $R$ with a cons\tant speed $v$. What is the magnitude of the centripetal force acting on it?
A. \frac{mv^2}{R}
B. \frac{m}{v^2}
C. \frac{R}{mv^2}
D. \frac{v^2}{mR}

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