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
Question 1 of 20 89 total questions
Question 21
waec 2014
A body is projected vertically upwards with a speed of 10 ms-1 from a point 2m above the ground. Calculate the total time taken for the body to reach the ground. [g = 10ms-2]
A1.00s
B2.00s
C2.18s
D3.00s
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Question 22
waec 2014
The knowledge of surface tension is applied in the following areas except in
Amanufacturing of rain coats
Bproduction of palm oil
Cfloating of a needle on water
Dwashing of plates with soapy water
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Question 23
waec 2014
Which of the following pairs of physical quantities is made up of vectors?
Aspeed and displacement
Bmass and force
Cdislacement and acceleration
Dmomentum and length
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Question 24
waec 2014
If no net force acts on an object, the object maintains a state of rest or constant speed in a straight line. The above is a statement of Newton's
Afirst law of motion
Bsecond law of motion
Cthird law of motion
Dlaw of universal gravitation
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Question 25
waec 2014
When the linear momentum of a body is constant, the net force acting on it
Ais zero
Bincreases
Cdecreases
Dremains constant
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Question 26
waec 2014
When an elastic material is stretched by a force, the energy stored in it is
Akinetic
Bpotential
Cthermal
Delectrical
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Question 27
waec 2014

An object of mass m moves with a uniform speed v round a circular path of radius r. If its angular speed is \(\omega\), the magnitude of the centripetal force acting on it is

A\(m \omega^2 r\)
B\(\frac{mv^2}{r}\)
C\(m \omega r\)
D\(\frac{mv^2}{r^2}\)
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Question 28
waec 2014
A ball falling through a viscous liquid is acted upon by
Aupthrust only
Bupthrust and the ball's weight
Cthe ball's weight and viscous force
Dupthrust, the ball's weight and viscous force
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Question 29
jamb 2014

A glass bottle of initial volume 2 x 10\(^4\) cm\(^3\) is heated from 20ºC to 50ºC. If the linear expansivity of glass is 9 x 10\(^{-6}\)K\(^{-1}\), the volume of the bottle at 50ºC is

A20016.2cm3
B20005.4cm3
C20008.1cm3
D20013.5cm3
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Question 30
jamb 2014
What type of reaction is represented by the equation \(^{2}_{1}X+^{2}_{1}X\rightarrow^{3}_{2}Y+^{1}_{0}n+Energy\)
AIonization
BFusion
CFission
DChain
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Question 31
jamb 2014
When \(^{210}_{82}Pb\) decays to \(^{206}_{80}Pb\), it emits
Atwo alpha and two beta particles
Ban alpha particle
Cone beta particle
Done alpha and one beta particle
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Question 32
jamb 2014

Which of the following is NOT a Fundamental S.I unit?

AMetre
BAmpere
CNewton
DSecond
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Question 33
jamb 2014

Which gas produces a red coloured light in a discharge tube?

AMercury
BArgon
CAir
DNeon
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Question 34
jamb 2014
Calculate the mass of the copper deposited during electrolysis when a current of 4A passes through a copper salt for 2 hours. [Ece of Copper z=3.3x10-7kgC-1]
A2.9x105kg
B9.5x10-7kg
C9.5x10-3kg
D2.9x104kg
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Question 35
jamb 2014
When an atom undergoes a beta decay, the atomic number of the nucleus
ARemains unchanged
BDecreases by one
CIncreases by one
DBecomes zero
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Question 36
jamb 2014
The magnitude of the angle of dip at the equator is
A360o
B0o
C90o
D180o
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Question 37
jamb 2014

What is the best method of demagnetizing a steel bar magnet?

AHammering
BHeating it
CRough handling it
DSolenoid method
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Question 38
jamb 2014
PHCN measures its electrical energy in
AW
BKWh
CWh
DJ
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Question 39
jamb 2014

A circuit has a resistance of 200Ω. The resistance of the circuit can be reduced to 120Ω when

AA 300Ω resistor is connected to it in parallel
BAn 80Ω resistor is conneceted to it in series
CA 150Ω resistor is connected to it in parallel
DA 240Ω resistor is connected to it in series
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Question 40
jamb 2014

The maximum power transfer occur in a cell when the external resistance is

ATwice the internal resistance of the cell
BThe same as the internal resistance of the cell
CGreater than the internal resistance of the cell
DLess than the internal resistance of the cell
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