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Physics Past Questions

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89 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
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Past Questions

89 questions
All JAMB WAEC NECO CUSTOM
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Question 1 of 20 89 total questions
Question 31
jamb 2014

What charge is stored in a 0.1F capacitor when a 10V supply is connected across it?

A1C
B5C
C4C
D2C
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Question 32
jamb 2014

When a negatively charged rod is brought near the cap of a charged gold leaf electroscope which has positive charges, the leaf

ARemains the same
BCollapses
CCollapses and diverges again
DDiverges
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Question 33
jamb 2014
When a telescope is in normal use, the final image is at
AInfinity
BThe focus
CThe radius of curvature
DThe near point
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Question 34
jamb 2014
In a compound microscope, the objective and the eye piece focal lengths are
AAt infinity
BLong
CShort
DThe same
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Question 35
jamb 2014
The focal length of a concave mirror is 2.0cm. If an object is placed 8.0cm from it, the image is at
A2.7m
B2.0m
C2.3m
D2.5m
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Question 36
jamb 2014
An object is placed 10m from a pinhole camera of length 25cm. Calculate the linear magnification.
A2.5x102
B2.5x10-2
C2.5x10-1
D2.5x101
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Question 37
jamb 2014

A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hill? [ speed of sound in air = \(340ms^{-1}\)

A528m
B66m
C136m
D264m
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Question 38
jamb 2014
The distance between two successive crests of a wave is 15cm and the velocity 300ms-1. Calculate the frequency.
A2.0x102Hz
B4.5x103Hz
C2.0x103Hz
D4.5x102Hz
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Question 39
jamb 2014

Heat transfer by convection in a liquid is due to the

ALatent heat of vaporization of the liquid
BIncreased vibration of the molecules of the liquid about theit mean position
CVariation of density of the liquid
DExpansion of the liquid as it is heated
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Question 40
jamb 2014

The temperature at which the water vapour present in the air is just sufficient to saturate air is

ABoiling point
BIce point
CSaturation point
DDew point
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Question 41
jamb 2014
The melting point of a substance is equivalent to its
AVapour Pressure
BSolidification Temperature
CLiquidification Temperature
DSolidification Pressures
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Question 42
jamb 2014
The quantity of heat needed to raise the temperature of a body by 1K is the body's
AHeat capacity
BInternal energy
CSpecific heat capacity
DLatent heat of fusion
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Question 43
jamb 2014
The equation PaVbTc= constant reduces to Charles Law if
Aa=1, b=1and c=0
Ba=1, b=0 and c=-1
Ca=0, b=1 and c=1
Da=0, b=1 and c=-1
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Question 44
jamb 2014

What is the equivalent of 20K in Celsius scale?

A-253oC
B-293oC
C68oC
D36oC
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Question 45
jamb 2014
The small droplets of water that form on the grass in the early hours of the morning is
AFog
BHaul
CMist
DDew
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Question 46
jamb 2014
A force of 500N1 is applied to a steel wire of cross-sectional area 0.2m2, The tensile stress is
A2.5x104Nm-2
B1.0x102Nm-2
C1.0x103Nm-2
D2.5x103Nm-2
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Question 47
jamb 2014
A wheel and an axle is used to raise a load whose weight is 800N when an effort of 250N is applied. If the radii of the wheel and axle are 800mm and 200mm respectively, the efficiency of the machine is
A90%
B80%
C85%
D87%
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Question 48
jamb 2014
A machine whose efficiency is 75% is used to lift a load of 1000N. Calculate the effort put in to the machine if it has a Velocity ratio of 4.
A343.32N
B233.33N
C333.33N
D334.33N
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Question 49
jamb 2014

The energy in the nucleus of atoms produce heat which can be used to generate

AKinetic energy
BMechanical energy
CElectrical energy
DPotential energy
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Question 50
jamb 2014
An object of mass 20kg is released from a height of 10m above the ground level. The kinetic energy of the object just before it hits the ground is
A200J
B4000J
C2000J
D500J
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