UTME Past Questions
Physics · 2022
40 questions
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Question 01
The force that pushes a body in a liquid upwards is called
A
Upthrust
B
Weight
C
Thrust
D
Viscosity
Question 02
The fundamental frequency of the diagram above is
A
f = V/2l
B
f = V/3l
C
f = V/4l
D
f = 2V/3l
Question 03
In the diagram, x represents the
A
Frequency
B
Resonance frequency
C
Amplitude
D
Altitude
Question 04
Which of the following remains unchanged when light travels from one medium to another?
A
Frequency
B
Velocity
C
Wavelength
D
None
Question 05
Which of the following instruments is used for measuring the thickness of a potentiometer wire?
A
Vernier caliper
B
Micrometer screw gauge
C
Metre rule
D
A pair of calipers
Question 06
A machine has a velocity ratio of 8 and efficiency of 80%. What is its mechanical advantage?
A
8
B
10
C
6.4
D
2.5
Question 07
The escape velocity of a body on earth is 11.2km/s. The body has the same acceleration due to gravity on earth and on another planet. What is the escape velocity on the other planet if its radius is twice that of earth?
A
11.2km/s
B
15.8km/s
C
22.4km/s
D
5.6km/s
Question 08
The half-life of a substance is 2 days. What fraction will remain after 8 days?
A
1/2
B
1/4
C
1/8
D
1/16
Question 09
Which of the following is used in radioactive dating?
A
Carbon-14
B
Carbon-12
C
Cobalt-60
D
None
Question 10
An object is projected at 30° to the horizontal with a velocity of 20m/s. What is the maximum height attained? [g = 10m/s
2
]
A
10m
B
20m
C
5m
D
2m
Question 11
One of the following is a secondary cell
A
Dry cell
B
Lead acid accumulator
C
Daniel cell
D
Leclanche cell
Question 12
The pressure of 1 bar is equivalent to
A
10 Pa
B
1,000 Pa
C
10,000 Pa
D
100,000 Pa
Question 13
Which of the following has no effect on the sensitivity of a galvanometer?
A
The number of turns in the coil
B
The strength of the magnetic field
C
Gaps between the coil
D
The area of the coil
Question 14
The p-type diode has
A
More electrons than holes
B
Equal number of electrons and holes
C
More holes than electrons
D
None
Question 15
In the diagram, what is the value of X, if the effective resistance is 1/1.2 ohms?
A
1.2 ohms
B
1.4 ohms
C
2.2 ohms
D
1.0 ohms
Question 16
Which of the following are complementary colours?
A
Cyan and yellow
B
Green and yellow
C
Blue and yellow
D
Green and blue
Question 17
If the system shown is in equilibrium, which of these is correct?
A
F
3
= F
1
B
F
2
= F
1
+ F
3
C
F
3
= F
1
+ F
2
D
F
2
+ F
1
= 0
Question 18
Which of the following is not part of the factors which determine the free fall of an object in the earth's field?
A
Location of the object on earth
B
Mass of the object
C
Acceleration due to gravity
D
Weight of the body
Question 19
Which of the following factors is common to all metals?
A
Hardness
B
Conductivity
C
Ductility
D
Malleability
Question 20
The mass of an object discharged at the cathode is 15g. If the current passed through is 3A, what is the time taken? [e.c.e = 3.3×10
-7
kgC
-1
]
A
996 mins
B
225 mins
C
253 mins
D
455 mins
Question 21
At resonance in an A.C. circuit
A
X
L
= X
C
B
X
C
= 1/2πfC
C
X
L
= 0
D
X
C
= 0
Question 22
The use of lenses is NOT applicable in the
A
Projector
B
Human eye
C
Periscope
D
Telescope
Question 23
Tyres are threaded to
A
Increase the weight of the tyres
B
Increase its longevity
C
Increase friction
D
Look good
Question 24
A ray of light is incident normally on a plane mirror. If the incident ray is kept fixed while the mirror is rotated through an angle of 30°, determine the initial and final angles of reflection respectively.
A
0° and 30°
B
90° and 60°
C
90° and 30°
D
0° and 60°
Question 25
A piece of chalk is broken into its smallest piece possible. What is the smallest piece?
A
Atom
B
Molecule
C
Ion
D
Neutron
Question 26
Which law describes the direction of induced current with motion of fields?
A
Faraday's law
B
Newton's law
C
Lenz's law
D
Fleming's law
Question 27
The electric iron uses which principle?
A
Thermionic emission
B
Photoelectric effect
C
Thermostat
D
Heating effect of current
Question 28
Why is water not used as a thermometric fluid?
A
Water wets glass
B
Anomalous expansion between 0°C and 4°C
C
Water has a high heat capacity
D
Water has a density of 1gcm
-3
Question 29
Which of the following is a scalar quantity?
A
Displacement
B
Momentum
C
Potential energy
D
Acceleration
Question 30
When a man stands in water, his legs appear shorter. Which principle causes this?
A
Reflection
B
Polarization
C
Refraction
D
Diffraction
Question 31
What is the dimension of momentum?
A
MLT
-1
B
ML
-1
T
-2
C
ML
-1
D
MLT
Question 32
A graph of P (pressure) against 1/V (volume) is
A
Parabola
B
Curved
C
Straight line
D
Hyperbola
Question 33
The power factor of a D.C. circuit is always
A
Zero
B
Less than unity
C
Unity
D
Greater than unity
Question 34
Which of the following uses force on a current-carrying conductor in a magnetic field?
I. Electric bell II. Electric iron III. Electric motor
A
I, II and III
B
I and II
C
II and III
D
III only
Question 35
The mechanical advantage of a good machine is
A
Greater than 1
B
Equal to 1
C
Less than 1
D
Greater than or equal to 1
Question 36
Which of these is stated by the kinetic molecular model in a solid?
A
The molecules are closely packed with little movement between them
B
The molecules are free to move around
C
The molecules are rigid and fixed in a lattice arrangement
D
The molecules are loosely packed with high movement
Question 37
Birds can perch on electric cables and not be electrocuted because
A
The feet of birds are insulated
B
Birds are generally immune to electricity
C
Birds have less weight
D
Birds have feathers
Question 38
A light of energy 10eV falls on a metal surface and electrons with a maximum kinetic energy of 4eV are ejected from the surface. What is the work function of the metal?
A
10 eV
B
4 eV
C
6 eV
D
2 eV
Question 39
The height of a mercury column at normal atmospheric pressure is
A
760 cm
B
76 cm
C
7.6 cm
D
0.76 cm
Question 40
What is the S.I. unit of heat capacity?
A
J/K
B
J/kg/K
C
J/kg
D
K/kg
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