POST UTME MOUNTAIN TOP UNIVERSITY 2024 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A thermodynamic system undergoes a process from state A to state B. If the initial temperature is 300 K and the final temperature is 400 K, and the change in entropy is 100 J/K, what is the change in internal energy?
A. -1000 J
B. -500 J
C. 500 J
D. 1000 J
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. What is the magnitude of the centripetal acceleration?
A. 0.5 m/s²
B. 1 m/s²
C. 2 m/s²
D. 4 m/s²
Question 3
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the capaci\tance is 8.0 x 10^-10 F, what is the value of the dielectric cons\tant?
A. 1.0
B. 2.0
C. 3.0
D. 4.0
Question 4
A force of 10 N acts on an object of mass 2 kg. What is the acceleration of the object?
A. 2 m/s²
B. 4 m/s²
C. 5 m/s²
D. 10 m/s²
Question 5
A gas at a pressure of 2 atm and a temperature of 300 K is allowed to expand to a pressure of 1 atm. What is the new temperature of the gas?
A. 200 K
B. 250 K
C. 300 K
D. 350 K
Question 6
A magnetic field is given by \vec{B} = \( 2\hat{i} + 3\hat{j} \) T. If the magnetic field is perp\endicular to the current, what is the magnitude of the current?
A. 1 A
B. 2 A
C. 3 A
D. 4 A
Question 7
A particle of mass 2 kg is moving in a circular path with a radius of 3 m. If the angular velocity is 4 rad/s, what is the centripetal acceleration?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 8
A circuit consists of a 12 Ω resistor, a 20 Ω resistor, and a 10 Ω resistor connected in series. If a voltage of 24 V is applied across the circuit, what is the current flowing through the circuit?
A. 0.5 A
B. 1 A
C. 1.5 A
D. 2 A
Question 9
A 2.0 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. Assuming the block undergoes simple harmonic motion, calculate the maximum speed of the block.
A. 0.8 m/s
B. 1.2 m/s
C. 1.6 m/s
D. 2.0 m/s
Question 10
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. 12 m/s^2
B. 4 m/s^2
C. 16 m/s^2
D. 24 m/s^2
Question 11
A block of mass 5 kg is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 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 light ray passes through a lens and is focused. If the focal length of the lens is 10 cm and the object dis\tance is 20 cm, what is the image dis\tance?
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm
Question 13
A 0.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 50 N/m. The block is displaced by 0.1 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, calculate the period of the block.
A. 0.5 s
B. 1.0 s
C. 1.5 s
D. 2.0 s
Question 14
A light ray passes through a prism of angle 60° and is deviated by 30°. What is the re\fractive index of the prism?
A. 1.5
B. 1.67
C. 1.8
D. 2.0
Question 15
A parallel plate capacitor consists of two plates, each of area 0.04 m^2, separated by a dis\tance of 0.02 m. The capacitor is charged to a potential difference of 12 V. Calculate the capaci\tance of the capacitor.
A. 0.02 F
B. 0.04 F
C. 0.06 F
D. 0.08 F

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