POST UTME NOUN 2017 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 force of 12 N, what is the magnitude of the acceleration of the particle?
A. 4 m/s^2
B. 6 m/s^2
C. 8 m/s^2
D. 10 m/s^2
Question 2
A gas is enclosed in a container at a pressure of 101.3 kPa and a temperature of 27°C. If the temperature is increased to 37°C, what is the new pressure?
A. 103.3 kPa
B. 105.3 kPa
C. 107.3 kPa
D. 109.3 kPa
Question 3
A particle of mass 1 kg is moving in a straight line with an initial velocity of 5 m/s. If the particle is subjected to a force of 10 N, directed in the opposite direction of the initial velocity, what is the acceleration of the particle?
A. 1 m/s^2
B. 2 m/s^2
C. 5 m/s^2
D. 10 m/s^2
Question 4
A magnetic field of 0.5 T is applied to a coil of 100 turns and radius 0.1 m. If the current in the coil is 2 A, what is the torque on the coil?
A. 0.1 Nm
B. 0.2 Nm
C. 0.3 Nm
D. 0.4 Nm
Question 5
A particle of mass 3 kg is moving in a circular path with a radius of 2 m. If the particle's speed is 4 m/s, calculate the centripetal force acting on the particle.
A. 10 N
B. 20 N
C. 30 N
D. 40 N
Question 6
A 100 W incandescent light bulb is connected to a 230 V AC power source. If the bulb is 90% efficient, what is the current drawn from the power source?
A. 0.4 A
B. 0.5 A
C. 0.6 A
D. 0.7 A
Question 7
A projectile is launched from the origin with an initial velocity $vec{v}_0 = v_0 \cos \theta hat{i} + v_0 \sin \theta hat{j}$, where $\theta$ is the angle of projection. Find the time of flight of the projectile.
A. \( \frac{2v_0 \sin \theta}{g} \)
B. \( \frac{v_0 \sin \theta}{g} \)
C. \( \frac{2v_0 \cos \theta}{g} \)
D. \( \frac{v_0 \cos \theta}{g} \)
Question 8
A 100 W light bulb is connected to a 220 V power source. If the resis\tance of the bulb is 200 Ω, what is the current flowing through the bulb?
A. 0.5 A
B. 1 A
C. 1.5 A
D. 2 A
Question 9
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. Calculate the current flowing through the circuit.
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 10
A gas is compressed adiabatically from an initial volume $V_1$ to a final volume $V_2$. If the initial pressure is $P_1$ and the final pressure is $P_2$, find the ratio of the final pressure to the initial pressure.
A. \( \frac{P_2}{P_1} = left\( \frac{V_1}{V_2} \right \ \)^{\gamma} )
B. \( \frac{P_2}{P_1} = left\( \frac{V_2}{V_1} \right \ \)^{\gamma} )
C. \( \frac{P_2}{P_1} = left\( \frac{V_1}{V_2} \right \ \)^{-\gamma} )
D. \( \frac{P_2}{P_1} = left\( \frac{V_2}{V_1} \right \ \)^{-\gamma} )
Question 11
A 10 kg block is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 0.2 m from its equilibrium position and released, what is the maximum speed of the block?
A. 2 m/s
B. 4 m/s
C. 6 m/s
D. 8 m/s
Question 12
A particle of mass 2 kg is attached to a spring with a spring cons\tant of 100 N/m. It is displaced from its equilibrium position by 0.2 m and released from rest. Assuming the motion is simple harmonic, calculate the angular frequency of the particle's motion.
A. 10 rad/s
B. 20 rad/s
C. 30 rad/s
D. 40 rad/s
Question 13
A parallel plate capacitor has a capaci\tance of 2 μF and is charged to a potential difference of 10 V. If the plates are then separated by a dis\tance of 0.1 m, what is the new capaci\tance?
A. 1 μF
B. 2 μF
C. 3 μF
D. 4 μF
Question 14
A photon of wavelength 500 nm is incident on a metal surface. If the work function of the metal is 2 eV, what is the maximum kinetic energy of the emitted electron?
A. 1 eV
B. 2 eV
C. 3 eV
D. 4 eV
Question 15
A particle of mass 1 kg is moving in a straight line with an initial velocity of 5 m/s. If the particle is subjected to a cons\tant force of 2 N, what is the acceleration of the particle after 2 seconds?
A. 1 m/s^2
B. 2 m/s^2
C. 3 m/s^2
D. 4 m/s^2

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: