POST UTME SUMMIT UNIVERSITY 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A particle of mass 0.1 kg is moving in a circular path of radius 0.5 m with a speed of 2 m/s. Calculate the centripetal force acting on the particle.
A. 0.1 N
B. 0.5 N
C. 1 N
D. 5 N
Question 2
A 2 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. What is the angular frequency of the resulting simple harmonic motion?
A. 1.0 rad/s
B. 5.0 rad/s
C. 10.0 rad/s
D. 20.0 rad/s
Question 3
A gas expands from an initial volume of 1.0 L to a final volume of 2.5 L at a cons\tant temperature of 300 K. What is the work done by the gas?
A. 1.5 J
B. 2.0 J
C. 2.5 J
D. 3.0 J
Question 4
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 5
A body of mass 5 kg is moving in a circular path of radius 2 m with a cons\tant speed of 4 m/s. Calculate the force acting on the body.
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 6
A body at temperature 27°C is heated to 127°C. What is the change in entropy?
A. 100 J/K
B. 200 J/K
C. 500 J/K
D. 1000 J/K
Question 7
A radioactive subs\tance has a half-life of 5 years. If 100 grams of the subs\tance is initially present, how much will be left after 20 years?
A. 10 g
B. 20 g
C. 30 g
D. 40 g
Question 8
A 2 kg object is moving in a straight line with a velocity of 5 m/s. Calculate the momentum of the object.
A. 10 kg m/s
B. 20 kg m/s
C. 30 kg m/s
D. 40 kg m/s
Question 9
A 50 Hz, 200 V AC supply is connected across a 100 Ω resistor. Calculate the rms value of the current flowing through the resistor.
A. 10 A
B. 20 A
C. 25 A
D. 30 A
Question 10
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 60° 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 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 force acting on the particle?
A. 8 N
B. 12 N
C. 16 N
D. 20 N
Question 12
A circuit consists of a 10 Ω resistor, a 20 Ω resistor, and a 5 Ω resistor connected in parallel. A 12 V battery is connected across the circuit. Calculate the current through the 10 Ω resistor.
A. 0.6 A
B. 0.8 A
C. 1.2 A
D. 1.5 A
Question 13
A gas at 300 K and 1 atm expands to 2 atm at cons\tant temperature. Calculate the final volume of the gas.
A. 0.5 m^3
B. 1 m^3
C. 2 m^3
D. 4 m^3
Question 14
A 100 W light bulb is connected to a 220 V power source. If the resis\tance of the bulb is 10 ohms, what is the current flowing through the bulb?
A. 2 A
B. 4 A
C. 6 A
D. 8 A
Question 15
A gas occupies a volume of 2.5 L at a pressure of 1.2 atm. If the temperature is increased to 300 K, what is the new volume of the gas?
A. 3.2 L
B. 4.0 L
C. 4.8 L
D. 5.6 L

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