POST UTME REDEEMERS UNIVERSITY 2018 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A body of mass 5 kg is moving with a velocity of 10 m/s. If a force of 20 N is applied to the body, calculate the acceleration produced.
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
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 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 3
A 200 V, 50 Hz AC supply is connected across a 100 Ω resistor. Calculate the power consumed by the resistor.
A. 1000 W
B. 2000 W
C. 3000 W
D. 4000 W
Question 4
A 5 kg block is moving at a speed of 2 m/s on a frictionless surface. If the block is subjected to a cons\tant force of 10 N, what is the acceleration of the block?
A. 0.5 m/s^2
B. 1.0 m/s^2
C. 1.5 m/s^2
D. 2.0 m/s^2
Question 5
A projectile is launched at an angle of 30° to the horizontal with an initial velocity of 20 m/s. What is the maximum height reached by the projectile?
A. 5 m
B. 10 m
C. 15 m
D. 20 m
Question 6
A 1000 W heater is connected to a 120 V AC voltage source. If the resis\tance of the heater is 10 Ω, what is the current drawn by the heater?
A. 10 A
B. 20 A
C. 30 A
D. 40 A
Question 7
A quantum particle has a wave function given by ψ(x) = Ae^\( -αx^2 \). If the particle is in a one-dimensional box of length L, what is the normalization cons\tant A?
A. 1
B. \sqrt{\frac{2}{L}}
C. \sqrt{\frac{L}{2}}
D. \sqrt{\frac{L^2}{2}}
Question 8
A particle of mass 2.0 kg is attached to a spring with a force cons\tant of 100 N/m. The particle is displaced by 0.20 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. 2.0 rad/s
C. 5.0 rad/s
D. 10.0 rad/s
Question 9
A radioactive sample has a half-life of 5 years. If the initial activity is 100 Bq, what is the activity after 10 years?
A. 12.5 Bq
B. 25 Bq
C. 50 Bq
D. 100 Bq
Question 10
A particle of mass 0.5 kg is moving in a circular path of radius 2 m with a cons\tant speed of 4 m/s. If the particle experiences a centripetal acceleration of 2 m/s^2, what is the magnitude of the net force acting on the particle?
A. 2 N
B. 4 N
C. 6 N
D. 8 N
Question 11
A 100 μF capacitor is connected in parallel with a 200 μF capacitor. What is the equivalent capaci\tance of the circuit?
A. 50 μF
B. 100 μF
C. 200 μF
D. 300 μF
Question 12
A particle of mass $m$ is moving in a circular path of radius $R$ with a cons\tant speed $v$. The particle is subjected to a centripetal force $F_c = \frac{mv^2}{R}$. If the particle is moving in a clockwise direction, what is the direction of the centripetal force?
A. Towards the center of the circle
B. Away from the center of the circle
C. Perp\endicular to the direction of motion
D. Parallel to the direction of motion
Question 13
A system is in equilibrium under the action of three forces. If two of the forces are equal in magnitude and opposite in direction, what is the condition for the third force to be in equilibrium?
A. The third force is equal in magnitude to the sum of the other two forces
B. The third force is equal in magnitude to the difference of the other two forces
C. The third force is equal in magnitude to one of the other two forces
D. The third force is equal in magnitude to the product of the other two forces
Question 14
A simple harmonic motion has an amplitude of 5 cm and a frequency of 2 Hz. What is the angular frequency of the motion?
A. 4\pi rad/s
B. 2\pi rad/s
C. \pi rad/s
D. 0.5\pi rad/s
Question 15
A gas at a pressure of 2 atm and a temperature of 300 K is allowed to expand to a volume of 5 m^3. What is the final pressure of the gas?
A. 0.4 atm
B. 0.8 atm
C. 1.2 atm
D. 1.6 atm

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: