POST UTME UNILORIN 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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 force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 2
A 1000 W heater is connected to a 200 V AC supply. If the power factor is 0.8, calculate the current drawn from the supply.
A. 4 A
B. 5 A
C. 6 A
D. 8 A
Question 3
A 10.0 Ω resistor is connected in series with a 20.0 Ω resistor. If a 15.0 V battery is connected across the combination, what is the total current drawn from the battery?
A. \( \frac{15}{30} \) A
B. \( \frac{15}{30} \) A
C. \( \frac{15}{30} \) A
D. \( \frac{15}{30} \) A
Question 4
A force of 10 N acts on an object, cau\sing it to accelerate at 2 m/s^2. What is the mass of the object?
A. 5 kg
B. 10 kg
C. 15 kg
D. 20 kg
Question 5
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 60° above the horizontal. If the air resis\tance is negligible, what is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 6
A gas is contained in a cylinder with a movable piston. If the gas is heated, what is the change in the volume of the gas if the initial volume is 2 L and the final temperature is 300 K, given that the initial temperature is 200 K?
A. 0 L
B. 1 L
C. 2 L
D. 3 L
Question 7
A 5 kg object is moving in a circular path with a radius of 2 m. If the object's speed is 4 m/s, what is the centripetal acceleration?
A. 0.8 m/s^2
B. 1.6 m/s^2
C. 2.4 m/s^2
D. 3.2 m/s^2
Question 8
A particle of mass 1 u and charge +e is moving in a circular path of radius 1 m in a magnetic field of strength 1 T. If the frequency of revolution is 10^6 Hz, calculate the speed of the particle.
A. 10^6 m/s
B. 10^7 m/s
C. 10^8 m/s
D. 10^9 m/s
Question 9
A gas occupies a volume of 2 L at a pressure of 1 atm. If the temperature is increased to 300 K, calculate the new volume of the gas.
A. 4 L
B. 6 L
C. 8 L
D. 10 L
Question 10
A gas at 300 K and 1 atm expands to twice its initial volume. Calculate the final temperature of the gas.
A. 200 K
B. 300 K
C. 400 K
D. 600 K
Question 11
A particle of mass 2 kg is attached to a spring with spring cons\tant 100 N/m. The particle is displaced by 0.2 m from its equilibrium position and released from rest. What is the angular frequency (ω) of the simple harmonic motion?
A. 10 rad/s
B. 20 rad/s
C. 30 rad/s
D. 40 rad/s
Question 12
A nucleus of mass number 240 and atomic number 94 undergoes \alpha decay. What is the mass number and atomic number of the daughter nucleus?
A. 236, 92
B. 238, 92
C. 236, 90
D. 238, 90
Question 13
A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. What is the speed of the sound wave?
A. 100 m/s
B. 200 m/s
C. 300 m/s
D. 400 m/s
Question 14
A simple harmonic motion has a maximum displacement of 5 cm and a period of 2 s. If the motion starts from the equilibrium position, what is the amplitude of the motion?
A. 2.5 cm
B. 3 cm
C. 4 cm
D. 5 cm
Question 15
A projectile is launched from the ground with an initial velocity of 50 m/s at an angle of 60° above the horizontal. Assuming the only force acting on the projectile is gravity, calculate the time it takes for the projectile to reach its maximum height.
A. 1.5 s
B. 2.0 s
C. 2.5 s
D. 3.0 s

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