UTME Past Questions
Physics · 2023
40 questions
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/ 40
Question 01
What is the forces on segment of wire that is 0.5m long, and has a current of 2A, when placed in a magnetic field of 2T at an angle of 30
o
to the field
A
1.0N
B
2.0N
C
0.1N
D
0.2N
Question 02
The mode of heat transfer that is electromagnetic in nature,
A
Conduction
B
Evaporation
C
Convection
D
Radiation
Question 03
The condition for resonance to occur in RLC series circuit is
A
When the angular frequency of the applied voltage is equal to the natural angular frequency of the circuit
B
When the angular frequency of the apply voltage is greater than the natural angular frequency of the circuit
C
When the angular of the apply voltage is less than the natural angular frequency of the circuit
D
When the angular frequency of the applied voltage is zero
Question 04
A solid weighs 10.5N in air and 5.5N when immersed in a liquid of density 900kgm
-3
. Calculate the volume of the solid. [g=10m/s
2
].
A
1.17×10
-4
m
3
B
5.56×10
-4
m
3
C
3.24×10
-4
m
3
D
2.24×10
-4
m
3
Question 05
A uniform metre rule AB balanced on a knife edge 60cm from end B when a load of 22g is kept 10cm away from the end A, what is the weight of the metre rule
A
40g
B
55g
C
66g
D
37g
Question 06
A particle in simple harmonic motion while passing through means position will have
A
Minimum kinetic energy and maximum potential energy
B
Maximum potential energy and minimum kinetic energy
C
Minimum kinetic energy and minimum potential energy
D
Maximum kinetic energy and minimum kinetic energy
Question 07
A pin floats on water due to the phenomenon of
A
Viscosity in fluid
B
Surface tension
C
Capillary tension
D
Gravitation
Question 08
I. it convert electrical energy into a mechanical energy II. It generate electricity III. It is based on the principle of electromagnetic induction IV. Its follows Fleming's left hand rule. Which of the statements above is or are true for electric motor
A
I only
B
I and II only
C
I, II, and III only
D
I and IV only
Question 09
A thick glass tumbler cracks when hot water is poured into it because
A
Anomalous expansions of water
B
Uneven expansion of the glass tumbler
C
Thermal expansion of water
D
Even expansion of the glass tumbler
Question 10
Which of the following is the function of p.n. junction diode of a semiconductor device
A
it can be used to convert alternating current AC to direct current DC
B
it can be used to convert direct current DC to alternating current
C
it can be used to amplify the electric current in a circuit
D
it can be used to step down the electric current in a circuit
Question 11
Which of the following is true of a particle in stable equilibrium
A
Potential energy is constant
B
Potential energy is maximum
C
Potential energy is minimum
D
Potential energy is zero
Question 12
Determine the equivalent capacitance of the capacitor shown in the circuit.
A
1.20uF
B
6.00uF
C
0.55uF
D
1.33uF
Question 13
The power factor of series R.L.C. circuit at resonance is
A
0
B
1
C
π
D
π/2
Question 14
In the given circuit, what is the ammeter reading given that the voltage across the capacitor and inductor are 300 volts each
A
1.2A
B
2.2A
C
3.2A
D
0.2A
Question 15
One of these is not a mechanical wave
A
Sound wave
B
Water wave
C
Light wave
D
Seismic wave
Question 16
Which of the following is a scalar quantity
A
Electric potential
B
Electric field
C
Angular momentum
D
Linear momentum
Question 17
Given three capacitors each of capacitance C, the resultant capacitance of 2C/3 can be obtained by
A
Combining all in parallel
B
All in series
C
Two of them in series and in parallel with the third
D
Two in parallel and third in series with this combination
Question 18
If two plane mirrors are positioned side by side, the number of images formed is 8. At what angle are they positioned
A
30
o
B
40
o
C
60
o
D
90
o
Question 19
If the half life of a particle is 4.5 days, how long will it take to decay ¾ of its original mass
A
9 days
B
12 days
C
15 days
D
21 days
Question 20
A transformer core is laminated to reduce
A
Hysteresis
B
Copper loss
C
Eddy current loss
D
Stray and dielectric losses
Question 21
A glass rod is charged when rubbed with silk cloth because
A
It transfers negative charge
B
It transfers positive charges
C
It accepts negative charges
D
Decreases the number of free electrons
Question 22
Addition of trivalent impurity to semiconductor
A
Increases the number of holes
B
Decreases the number of holes
C
Increases the number of free electrons
D
Decreases the number of free electrons
Question 23
A charge of magnitude 1.6×10
-19
C is placed in a uniform electric field of intensity 1,200v/m. Calculate its acceleration if the mass of the charge is 9.1×10
-31
kg
A
2.11×10
12
ms
-2
B
2.11×10
14
ms
-2
C
6.83×10
12
ms
-2
D
6.83×10
14
ms
-2
Question 24
The defect of the eye lens which occurs when the ciliary muscles are weak is called
A
Long sightedness
B
Short sightedness
C
Presbyopia
D
Astigmatism
Question 25
A light of 6.22eV is incident on a cadmium surface. If a stopping voltage of 2.1eV is required to reduce the photocurrent to zero, calculate the work function of the cadmium
A
4.07eV
B
2.15eV
C
6.22eV
D
8.37eV
Question 26
The fundamental frequency of an open organ pipe is the same as that of the second overtone of a closed organ pipe of length 0.2m. What is the length of the open organ pipe
A
0.132m
B
0.160m
C
0.125m
D
0.080m
Question 27
What is the maximum possible wavelength in an open organ pipe of length a cm
A
a cm
B
2a cm
C
3a cm
D
4a cm
Question 28
Mercury is used as a thermometric substance because I. its specific heat is low II. Does not wet glass III. It is opaque
A
I only
B
I and II only
C
II and III only
D
I, II and III
Question 29
The magnetic field inside a solenoid is
A
Non uniform
B
Uniform
C
Zero
D
Weak
Question 30
A gun with muzzle velocity of 500m/s shoots a bullet at a bird 50m away. To hit the target the gun should be aimed at, take g = 10m/s
2
A
B
C
D
Question 31
If the distance between two suspended masses 50kg each is quadrupled, the gravitational force of attraction between them is
A
Reduced by four
B
Increased by four
C
Increased by sixteen
D
Reduced by sixteen
Question 32
In a simple machine, the variation of the efficiency with load is
A
A parabola
B
Straight line
C
A hyperbola
D
Logarithmic
Question 33
Binding energy is
A
The amount of energy released when a proton changes energy level
B
The amount of energy released when electrons change energy level
C
The amount of energy required to break a nucleus apart into protons and neutrons
D
The amount of energy required to break a nucleus apart into protons and electrons
Question 34
If the heat capacity of 100g of a substance is 300Jk
-1
, what would be the heat capacity of 10g of the substance
A
30 Jk
-1
B
300 Jk
-1
C
30,000 Jk
-1
D
3 Jk
-1
Question 35
Wooden ladles are commonly used domestically to scoop hot soup because of its
A
Good insulation of electricity
B
Good insulation of heat and electricity
C
Bad conduction of heat and electricity
D
Good insulation of heat
Question 36
Which of these thermometers uses the volume of a fixed mass of liquid as its thermometric property
A
Mercury in glass thermometer
B
Thermocouple thermometer
C
Constant volume gas thermometer
D
Resistance thermometer
Question 37
As pressure is increased
A
the melting point of ice decreases
B
the melting point of ice increases
C
the boiling point increases
D
no change is observed in the melting point of ice or the boiling point of water
Question 38
Which of the following statement is or are true about gamma rays: I. It carries negative charges II. It can be deflected by both magnetic and electric field III. It can be stopped by a sheet of paper IV. It has zero rest mass and neutral charge.
A
I only
B
I and II only
C
II and IV only
D
IV only
Question 39
A cyclist of mass 30kg exerts a force of 250N to move his bicycle. The acceleration produced is 4m/s
2
. What is the frictional force between the road and the tires.
A
200N
B
120N
C
130N
D
180N
Question 40
The temperature of land rises more quickly than that of the sea because the specific heat of the soil is
A
More than that of water
B
Less than that of water
C
Equal to that of water
D
Negligible
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