POST UTME LASU 2017 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A body is moving in a circular path with a cons\tant speed of 5 m/s. If the radius of the path is 2 m, calculate the magnitude of the centripetal force.
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 2
A circuit consists of a 12 V battery, a 4 Ω resistor, and an inductor of induc\tance 2 H. If the circuit is closed at t = 0, what is the current in the circuit at t = 2 s?
A. 2 A
B. 3 A
C. 4 A
D. 5 A
Question 3
A 100 W bulb is connected to a 220 V supply. What is the current drawn by the bulb?
A. 0.4 A
B. 0.5 A
C. 0.6 A
D. 0.7 A
Question 4
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 magnitude of the acceleration of the particle?
A. 10 m/s^2
B. 12 m/s^2
C. 15 m/s^2
D. 20 m/s^2
Question 5
A radioactive sample has an initial activity of 100 Bq. If the half-life of the sample is 2 days, what is the activity of the sample after 4 days?
A. 50 Bq
B. 25 Bq
C. 12.5 Bq
D. 6.25 Bq
Question 6
A particle of mass 1 kg is moving in a circular path of radius 2 m with a cons\tant speed of 3 m/s. If the particle is subjected to a centripetal force of 6 N, what is the magnitude of the acceleration of the particle?
A. 6 m/s^2
B. 8 m/s^2
C. 10 m/s^2
D. 12 m/s^2
Question 7
A body of mass 5 kg is moving with a velocity of 10 m/s. If it is subjected to a force of 20 N, what is the acceleration produced?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 8
A particle of mass 2 kg is moving in a circular path with a cons\tant speed of 4 m/s. If the radius of the path is 3 m, calculate the magnitude of the centripetal acceleration.
A. 12 m/s^2
B. 16 m/s^2
C. 20 m/s^2
D. 24 m/s^2
Question 9
A gas is contained in a cylinder of volume 2 L at a pressure of 2 atm. If the temperature of the gas is increased by 10 K, what is the new pressure of the gas?
A. 2.2 atm
B. 2.5 atm
C. 3 atm
D. 3.5 atm
Question 10
A 10 V battery is connected in series with a 5 Ω resistor and a 2 Ω resistor. What is the total resis\tance of the circuit?
A. 3 Ω
B. 5 Ω
C. 7 Ω
D. 10 Ω

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