UTME 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A carpenter on top of a roof 20.0 m high dropped a hammer of mass 1.5 kg and it fell freely to the ground. The kinetic energy of the hammer just before hitting the ground is [g = \( 10 ms^{-2} \)]
A. 300 J
B. 450 J
C. 600 J
D. 150 J
Question 2
From the diagram above, calculate the incident angle i.
A. 49°
B. 41°
C. 35°
D. 61°
Question 3
The diagrams above show the positions of a cone. The position which can be described as neutral equilibrium is represented as
A. Y and Z
B. Y and X
C. Z only
D. X only
Question 4
Which of the following is most strongly deflected by a magnetic field?
A. β-particles
B. χ-particles
C. γ-rays
D. None
Question 5
What is the best method of demagnetizing a steel bar magnet?
A. Heating it.
B. Rough handling it.
C. Solenoid method.
D. Hammering.
Question 6
The net capacitance in the circuit shown above is
A. \( 8.0 \mu \mathrm{~F} \)
B. \( 6.0 \mu \mathrm{~F} \)
C. \( 2.0 \mu F \)
D. \( 4.0 \mu F \)
Question 7
If current flows in the direction of the arrows in the solenoid above, the North pole is at
A. P
B. Q
C. X
D. Y
Question 8
The main purpose of the transformer in an a.c. radio set is to
A. increase power to the radio.
B. convert energy from a.c. to d.c.
C. step up the voltage.
D. step down the voltage.
Question 9
The temperature at which the water vapour present in the air is just sufficient to saturate the air is
A. ice point
B. saturation point
C. dew point
D. boiling point
Question 10
The process of energy production in the sun is
A. nuclear fission
B. nuclear fusion
C. electron collision
D. radioactive decay
Question 11
A transistor functions mainly as a
A. switch and an amplifier
B. rectifier and an amplifier
C. charge storer and a switch.
D. charge storer and an amplifier
Question 12
When the bottom tip of a vibrating tuning fork is held in contact with a wooden box, a louder sound is heard. This phenomenon is known as
A. beats
B. echoing
C. reverberation
D. resonance
Question 13
A note is called an octave of another note when
A. the notes have the same fundamental frequency
B. its frequency is half of the first note
C. its frequency is twice that of the first note
D. its periodic time is twice that of the first note.
Question 14
A cell of emf 1.5 V is connected in series with a 1 Ω resistor, and a current of 0.3 A flows through the resistor. Find the internal resistance of the cell.
A. 4.0 Ω
B. 3.0 Ω
C. 1.5 Ω
D. 1.0 Ω
Question 15
The ground is always cold at night because the
A. the sun no longer shines at night
B. atmosphere reflects the sun's energy at night
C. atmosphere absorbs the sun's energy at night
D. earth radiates heat to the atmosphere at night

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