POST UTME UNILORIN 2019 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A particle of mass 2.0 kg is moving in a circular path with a radius of 3.0 m. If the particle's speed is 4.0 m/s, what is its angular velocity?
A. \( \frac{4}{3} \) rad/s
B. \( \frac{3}{4} \) rad/s
C. \( \frac{4}{3} \) rad/s
D. \( \frac{3}{4} \) rad/s
Question 2
A 5.0 Ω resistor and a 10.0 Ω resistor are connected in parallel. If a 12.0 V battery is connected across the combination, what is the total current drawn from the battery?
A. \( \frac{12}{15} \) A
B. \( \frac{12}{15} \) A
C. \( \frac{12}{15} \) A
D. \( \frac{12}{15} \) A
Question 3
A wave has a frequency of 50 Hz and a wavelength of 0.1 m. What is the speed of the wave?
A. 5 m/s
B. 10 m/s
C. 20 m/s
D. 50 m/s
Question 4
A wave with a frequency of 50 Hz and a wavelength of 2 m is traveling through a medium. If the wave is reflected from a fixed \end, what is the frequency of the reflected wave?
A. 25 Hz
B. 50 Hz
C. 75 Hz
D. 100 Hz
Question 5
A thermodynamic system undergoes a cyclic process, where the net change in its internal energy is zero. If the system absorbs 500 J of heat energy from its surroundings during one cycle, what is the work done by the system during the cycle?
A. -500 J
B. 500 J
C. 0 J
D. 1000 J
Question 6
A gas at 300 K has a volume of 2.0 L. If the temperature is increased to 400 K and the volume is increased to 3.0 L, what is the new pressure?
A. \( \frac{3}{2} \) atm
B. \( \frac{3}{2} \) atm
C. \( \frac{3}{2} \) atm
D. \( \frac{3}{2} \) atm
Question 7
A nucleus of mass number 240 and atomic number 94 undergoes \alpha decay. What is the mass number and atomic number of the daughter nucleus?
A. 236, 92
B. 238, 92
C. 236, 90
D. 238, 90
Question 8
A gas is contained in a cylinder with a movable piston. If the gas is heated, what is the change in the volume of the gas if the initial volume is 2 L and the final temperature is 300 K, given that the initial temperature is 200 K?
A. 0 L
B. 1 L
C. 2 L
D. 3 L
Question 9
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/s^2, what is the magnitude of the force acting on the particle?
A. 8 N
B. 10 N
C. 12 N
D. 16 N
Question 10
A 1000 W heater is connected to a 200 V AC supply. If the power factor is 0.8, calculate the current drawn from the supply.
A. 4 A
B. 5 A
C. 6 A
D. 8 A
Question 11
A 5 kg object is moving in a circular path with a radius of 2 m. If the object's speed is 4 m/s, what is the centripetal acceleration?
A. 0.8 m/s^2
B. 1.6 m/s^2
C. 2.4 m/s^2
D. 3.2 m/s^2
Question 12
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 0.1 H inductor in series. Calculate the inductive reac\tance of the circuit.
A. 2 Ω
B. 4 Ω
C. 6 Ω
D. 8 Ω
Question 13
A particle is moving in a circular path with a radius of 2 m. If the particle completes one revolution in 10 s, what is its angular velocity?
A. 0.628 rad/s
B. 1.256 rad/s
C. 2.512 rad/s
D. 6.283 rad/s
Question 14
A 1000-turn coil of wire is placed in a magnetic field with a flux density of 0.1 T. If the coil is rotated through an angle of 90°, calculate the change in magnetic flux.
A. 0.1 T
B. 10 T
C. 100 T
D. 1000 T
Question 15
A gas at 300 K and 1 atm expands to twice its initial volume. Calculate the final temperature of the gas.
A. 200 K
B. 300 K
C. 400 K
D. 600 K

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: