Physics Past Questions

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4,719 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
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Past Questions

4,719 questions
Question 1 of 20 4,719 total questions
Question 1181
jamb 2005

The process whereby the molecules of different substances move randomly is called?

Acapillarity
Bsurface tension
Cosmosis
Ddiffusion
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Question 1182
jamb 2005

A body of mass 36kg falls through a viscous liquid which offers a drag force of 260N on the body. The upthrust on the body at terminal velocity is?
[g = 10ms\(^2\)]

A100N
B620N
C50N
D310N
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Question 1183
jamb 2005
A 3m3 volume of liquid W of density 200kgm3 is mixed with another liquid L of volume 7m3 and density 150kgm-3. the density of mixture is?
A165kgm-3
B100kgm-3
C265kgm-3
D350kgm-3
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Question 1184
jamb 2005

When the temperature difference between the wet and dry bulbs of a hygrometer is high, this indicates that

Ait is about to rain
Bthe relative humidity is high
Cthere is plenty of sunshine
Dthe relative humidity is low
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Question 1185
jamb 2005

which of the following materials is a conductor?

AGlass
BWax
CSodium
DPlastic
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Question 1186
jamb 2005
The current in a reverse-biased junction is due to?
Aminority carriers
Belectrons
Cmajority carriers
Dholes
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Question 1187
jamb 2005
A transformer is rated 240v. If the primary coil is 4000 turns and the secondary voltage 12v, determine the number of turns in the secondary coil.
A200
B100
C250
D150
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Question 1188
jamb 2005

The ray which causes gas molecules to glow is known as

Acathode ray
Banode ray
Cmolecular ray
Dgamma ray
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Question 1189
jamb 2005

The charge carriers in gasses are

Aions only
Belectrons and ions
Celectrons and holes
Delectrons only
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Question 1190
jamb 2005
A silicon material is dopped with an element of a certain group and an n-type semi-conductor is formed. the most likely group of the element is
AV
BIII
CI
DII
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Question 1191
jamb 2005
When impurities are added to semi-conductors, the conductivity of the semi-conductor
Aincreases then decreases
Bincreases
Cdecreases
Dremains constant
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Question 1192
jamb 2005

A proton moving with a speed of 1.0 x 10\(^6\)ms\(^{-1}\) through a magnetic field of 1.0T experiences a magnetic force of magnitude 8.0 x 10\(^{-14}\) N. The angle between the proton's velocity and the field is 

[1.6 x 10\(^{-19}\)C]

A60°
B90°
C30°
D45°
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Question 1193
jamb 2005
the time it will take a certain radioactive material with a half-life of 50 days to reduce to 1/32of its original number is
A250days
B150days
C300days
D200days
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Question 1194
jamb 2005
In an a.c circuit that contains only a capacitor, the voltage lags behind the current by
A180°
B90°
C60°
D30°
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Question 1195
jamb 2005

An object is projected from a height of 80 m above the ground with a velocity of 40ms-1 at an angle of 30° to the horizontal. The time of flight [ g ≈ 10m/s\(^2\)

A8 s
B4 s
C16 s
D10 s
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Question 1196
jamb 2005
In an ideal wheel an axle system, R stand for the radius of the wheel and r is the radius of the axle. the mechanical advantage is
A(R/r)2
Br/R
C(r/R)2
DR/r
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Question 1197
jamb 2005

The pair of physical quantities consisting of vectors only are

Amomentum and power
Bvelocity and distance
Cdisplacement and torque
Daccelaration and speed
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Question 1198
jamb 2005
A real image three times the size of an object is formed 24cm from a converging mirror. what is the focal length of the mirror.
A16cm
B6cm
C8cm
D12cm
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Question 1199
jamb 2005

A thin converging lens has a power of 4.0 diopters determined its focal length.

A2.50m
B0.03m
C5.00m
D0.25m
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Question 1200
jamb 2005

The sharpness of the boundary of the shadow of an object is determined by the

Aintensity of light striking the object
Brays of light passing through the object
Cnature of the object
Dopacity of the object
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