UTME Past Questions
Physics · 2020
40 questions
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Question 01
The figure above shows two boxes placed on top of a table. If the boxes are equal in weight, it can be deduced that
A
The pressure exerted by A is greater than that of B
B
The pressure exerted by B is greater than that of A
C
The pressure exerted by A is equal to that of B
D
The box with greater weight exerts the greater pressure
Question 02
A ball of mass 0.5kg moving at 10m/s collides with another ball of equal mass at rest. If the two balls move together after the impact, calculate the velocity with which they do this.
A
20m/s
B
10m/s
C
5m/s
D
0.5m/s
Question 03
Which of the following energy conversions takes place when a catapult is used to project a stone?
A
The elastic potential energy of the catapult is converted into kinetic energy of the stone
B
The gravitational potential energy is converted into elastic potential energy
C
The kinetic energy of the catapult is converted into the kinetic energy of the stone
D
The elastic potential energy of the catapult is converted into the potential energy of the stone
Question 04
Which of these equations gives the relationship between linear speed v and angular speed ω of a body moving uniformly in a circle of radius r?
A
v = ω
2
r
B
v = ωr
C
v = ωr
2
D
v = ω/r
Question 05
What is the effect of using a split-ring in a simple D.C. generator?
A
The direction of rotation of the coil is reversed
B
The current in the coil flows in the same direction
C
The current in the coil becomes alternating
D
The contact with the voltage source is cut off
Question 06
A mass of gas at 17°C and 700mmHg has a volume of 1.2m
3
. Determine its volume at 27°C and pressure 750mmHg.
A
2.2m
3
B
1.2m
3
C
4.8m
3
D
3.0m
3
Question 07
It takes 4 minutes to boil a quantity of water electrically. How long will it take to boil the same quantity of water using the same heating coil but with the current doubled?
A
32 mins
B
8 mins
C
2 mins
D
1 min
Question 08
The following are vector quantities EXCEPT
A
Momentum
B
Force
C
Kinetic energy
D
Magnetic induction
Question 09
A plane inclined at an angle of 30° to the horizontal has an efficiency of 50%. The force parallel to the plane required to push a load of 500N up the plane is
A
500N
B
1000N
C
250N
D
333.33N
Question 10
A man of mass 77kg stands on a spring-weighing machine inside a lift. When the lift starts to ascend, its acceleration is 2m/s
2
. What will be the reading on the machine?
A
770N
B
924N
C
154N
D
616N
Question 11
Dry hydrogen is trapped by a pellet of mercury in a uniform capillary tube closed at one end. If the length of the column of hydrogen at 27°C is 1.0m, at what temperature will the length be 1.20m?
A
22.5°C
B
32.4°C
C
77°C
D
87°C
Question 12
The nucleon number and the atomic number of a neutral atom of an element are 238 and 92 respectively. What is the number of neutrons in the atom?
A
165
B
146
C
119
D
73
Question 13
A body moves with constant speed but has an acceleration. This is possible if it
A
Moves in a straight line
B
Is oscillating
C
Moves in a circle
D
Has a varying acceleration
Question 14
A ball is projected horizontally from the top of a hill with a velocity of 20m/s. If it reaches the ground 4 seconds later, what is the height of the hill?
A
20m
B
40m
C
60m
D
80m
Question 15
The product PV, where P is pressure and V is volume, has the same unit as
A
Power
B
Work
C
Acceleration
D
Impulse
Question 16
An image which can be formed on a screen is said to be
A
Virtual
B
Blurred
C
Real
D
Erect
Question 17
Which of the following is stored by a dry Leclanche cell?
A
Chemical energy
B
Nuclear energy
C
Electrical energy
D
Heat energy
Question 18
A given mass of gas at a temperature of 30°C is trapped in a tube of volume V. Calculate the temperature of the gas when the volume is reduced to two-thirds of its original value by applying a pressure twice the original.
A
-71°C
B
40°C
C
131°C
D
404°C
Question 19
The function of manganese(IV) oxide in a Leclanche cell is to
A
Decrease the e.m.f. of the cell
B
Prevent local action
C
Prevent polarization
D
Increase the density of the electrolyte
Question 20
The density of water is 1gcm
-3
. Calculate the change in volume when 90g of ice is completely melted.
A
0cm
3
B
9cm
3
C
10cm
3
D
90cm
3
Question 21
A hygrometer is an instrument used to measure
A
Dew point
B
Temperature
C
Relative density
D
Relative humidity
Question 22
In the diagram above, the current I is
A
1.0A
B
2.0A
C
2.5A
D
4.0A
Question 23
Calculate the peak voltage of a mains supply of r.m.s. value 220V.
A
311V
B
240V
C
222V
D
150V
Question 24
To obtain a maximum horizontal range for a projectile, it must be launched at angle θ to the horizontal. The value of θ is
A
30°
B
90°
C
45°
D
60°
Question 25
Two points A and B are 1.0m apart. What is the least frequency that will resonate with a wire stretched between these two points, given that the speed of the wave in the wire is 200m/s?
A
50Hz
B
100Hz
C
150Hz
D
75Hz
Question 26
If an ebonite rod is rubbed with fur, it is true that
A
The fur will acquire positive charge while the rod will acquire negative charge
B
The fur will acquire negative charge while the rod will acquire positive charge
C
Both the fur and the rod will acquire positive charge
D
Both the fur and the rod will acquire negative charge
Question 27
Given that the decay constant of a radioactive element is 0.055s
-1
, its half-life is
A
18.18s
B
12.6s
C
0.055s
D
0.00303s
Question 28
A ball of mass 2kg hits a wall with a horizontal speed of 10m/s and rebounds with the same speed. The impulse experienced by the ball is
A
0Ns
B
20Ns
C
40Ns
D
50Ns
Question 29
Determine the magnitude of the acceleration of an object of mass 5kg which is being acted upon by two forces each of magnitude 50N, acting perpendicularly to each other.
A
10m/s
2
B
20m/s
2
C
14m/s
2
D
11m/s
2
Question 30
Given that the radius of the earth is 6400km and the acceleration due to gravity is 10m/s
2
, determine the escape velocity of an object on the surface of the earth.
A
11.3m/s
B
1.13×10
4
m/s
C
3.65×10
3
m/s
D
113km/s
Question 31
In which of the parts will electric charge tend to concentrate most?
A
D
B
C
C
B
D
A
Question 32
In the wavefront shown above, energy is transferred from A to B in 0.05s. What is the frequency of the wave?
A
20Hz
B
70Hz
C
0.0143Hz
D
90Hz
Question 33
Anomalous behaviour of water occurs
A
0°C - 4°C
B
-4°C - 0°C
C
0°C - 25°C
D
1°C - 100°C
Question 34
The pitch of a note depends on
A
Overtone
B
Amplitude
C
Frequency
D
Period
Question 35
An erect image four times as big as the object is formed by a lens of focal length 15.0cm. What is the image distance from the lens?
A
45cm
B
30cm
C
11.3cm
D
18.8cm
Question 36
The density and weight of a body are respectively 5000kgm
-3
and 1.0N. What is the apparent weight of the body when fully immersed in water?
A
1.0N
B
0.2N
C
0.8N
D
0.08N
Question 37
One hundred complete waves pass a given point in 5s. Given that the distance between two consecutive crests on the wave is 11m, what is the speed of the wave?
A
300m/s
B
220m/s
C
200m/s
D
440m/s
Question 38
Given that the speed of light is 300 million metres per second, calculate the energy released in a nuclear reaction where the mass defect is 1.0×10
-5
kg.
A
9×10
11
J
B
3×10
3
J
C
4.5×10
11
J
D
33J
Question 39
The property of waves which can be used to differentiate light waves from sound waves is
A
Reflection
B
Refraction
C
Interference
D
Polarization
Question 40
The electromagnetic radiation with the shortest wavelength is
A
Radio wave
B
Gamma ray
C
X-ray
D
Visible light
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