POST UTME CRAWFORD UNIVERSITY 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A particle of mass 1 kg is moving in a circular path of radius 2 m with a speed of 4 m/s. What is the magnitude of the centripetal force acting on the particle?
A. 1 N
B. 2 N
C. 4 N
D. 8 N
Question 2
A projectile is launched from the ground with an initial velocity of 20 m/s at an angle of 30° above the horizontal. If the acceleration due to gravity is 9.8 m/s², what is the maximum height reached by the projectile?
A. 10 m
B. 15 m
C. 20 m
D. 25 m
Question 3
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/s², what is the magnitude of the force acting on the particle?
A. 10 N
B. 12 N
C. 15 N
D. 18 N
Question 4
A particle is moving in a circular path with a radius of 2 m. If the particle completes one revolution in 4 s, what is its angular velocity?
A. 1.57 rad/s
B. 3.14 rad/s
C. 6.28 rad/s
D. 12.56 rad/s
Question 5
A 5 kg block of wood is susp\ended from a spring with a spring cons\tant of 200 N/m. If the block is displaced by 0.2 m from its equilibrium position, calculate the potential energy stored in the spring.
A. 20 J
B. 40 J
C. 60 J
D. 80 J
Question 6
A wave has a frequency of 20 Hz and a wavelength of 0.5 m. If the wave is traveling in the positive x-direction, what is the direction of the particle velocity?
A. Positive x-direction
B. Negative x-direction
C. Positive y-direction
D. Negative y-direction
Question 7
A radioactive sample decays from 100 g to 50 g in 10 years. If the half-life of the sample is 5 years, calculate the decay cons\tant.
A. 0.01 yr^-1
B. 0.02 yr^-1
C. 0.03 yr^-1
D. 0.04 yr^-1
Question 8
A 5.00 m long rod is pivoted at one \end. If a 2.00 N force is applied at a dis\tance of 1.50 m from the pivot, what is the torque?
A. 3.00 Nm
B. 3.50 Nm
C. 4.00 Nm
D. 4.50 Nm
Question 9
A \sinusoidal voltage source of amplitude $V_0$ and frequency $f$ is connected to a resistor of resis\tance $R$. If the voltage is measured at a time $t$, what is the voltage $V$?
A. V_0 \sin \( 2\pi ft \)
B. V_0 \cos \( 2\pi ft \)
C. V_0 \sin \( \pi ft \)
D. V_0 \cos \( \pi ft \)
Question 10
A spring with spring cons\tant 200 N/m is stretched by 0.1 m. What is the force exerted by the spring?
A. 20 N
B. 30 N
C. 40 N
D. 50 N
Question 11
A sound wave with a frequency of 200 Hz is produced by a source moving towards a stationary observer. What is the apparent frequency heard by the observer?
A. 180 Hz
B. 200 Hz
C. 220 Hz
D. 240 Hz
Question 12
A gas is heated from 300 K to 400 K at cons\tant volume. If the initial volume is 2.00 L, what is the final volume?
A. 3.33 L
B. 4.00 L
C. 2.00 L
D. 1.50 L
Question 13
A wave with a frequency of 50 Hz and a wavelength of 2 m is traveling through a medium. If the wave has a speed of 100 m/s, calculate the wave number.
A. 10 rad/m
B. 20 rad/m
C. 30 rad/m
D. 40 rad/m
Question 14
A 100 g block of copper is heated from 20°C to 80°C. If the specific heat capacity of copper is 0.385 J/g°C, what is the heat energy transferred?
A. 3.85 J
B. 4.15 J
C. 4.85 J
D. 5.15 J
Question 15
A uniform magnetic field of strength 2.0 T is applied to a current-carrying wire of length 0.5 m. If the current in the wire is 5.0 A, what is the magnitude of the magnetic force experienced by the wire?
A. 0.5 N
B. 1.0 N
C. 2.0 N
D. 5.0 N

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: