Physics Past Questions

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2,483 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
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Past Questions

2,483 questions
Question 1 of 20 2,483 total questions
Question 1031
jamb 1987
Which of the following units is equivalent to kgms-1?
ANs-1
BNms-1
CNs
DJs-1
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Question 1032
jamb 1986
fig 1 is a graph of force against extension for a spiral spring, the force constant of the spring is given by the
Aslope of the linear prtion of the graph
Blength of the linear portion of the graph
Carea under the linear portion of the graph
Darea under the entire graph
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Question 1033
jamb 1986

A uniform meter rule QR is balanced on a knife edge which is 55cm from R, when a mass of 10g is hung at P as shown above, the mass of the meter rule is

A550g
B350g
C70g
D35g
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Question 1034
jamb 1986
In fig 3, three forces F1, F2, and F3 acting at O are in equilibrium. If the magnitude of F1 is 10N,and the magnitude of F2 is 5N, find the magnitude of F3
A26.4N
B15.0N
C13.2N
D10.0N
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Question 1035
jamb 1986

fig 4 represents a block-and-tackle pulley system on which an effort of W newtons supports a load of 120.0N if the efficiency of the system is 40% then the value of W is

A28.0N
B48.0N
C50.0N
D288.0N
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Question 1036
jamb 1986
In an experiment in which molten naphthalene is allowed to cool, the cooling curve in fig 5 was obtained, the temperature \( 80^{\circ}C \) is known as
Acooling temperature
Bboiling point
Cmelting point
Dvaporization point
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Question 1037
jamb 1986

In fig 6, a ray of light in air strikes a glass plate at an angle of incidence 60 degrees, the reflected ray is observed to be perpendicular to the refracted ray, what is the refractive index of the glass

A1.73
B1.50
C0.87
D0.57
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Question 1038
jamb 1986
if the fig above E is an accumulator with negligible internal resistance. and the EMF 9.0V, The the total current is
A0.3A
B0.8A
C1.0A
D1.8A
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Question 1039
jamb 1986

In fig 9 the value of R is

A3Ω
B4Ω
C5Ω
D6Ω
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Question 1040
jamb 1986
When a box of mass 45kg, is given an initial speed of 5ms-1 it slides along a horizontal floor a distance of 3m before coming to a rest. what is the coefficient of kinetic friction between the box and the floor? (G = 10ms-2)
A\( \frac{5}{6} \)
B\( \frac{5}{12} \)
C\( \frac{1}{3} \)
D\( \frac{2}{3} \)
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Question 1041
jamb 1986

Which of the following is most strongly deflected by magnetic field?

A\(\gamma\) - rays
BX- particle
C\(\beta\) - particles
DX - rays
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Question 1042
jamb 1986

The wavelength of ultraviolet radiation is 400nm. If the speed of light in air is 3 x 10\(^8\)ms\(^{-1}\), then the frequency of the ultraviolet radiation is

A1.3 x 1015Hz
B7.5 x 105Hz
C1.2 x 1011Hz
D7.5 x 1014Hz
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Question 1043
jamb 1986
If the inclination at Ibadan is 7oS, this means that
Athe angle between the geographic meridian and the magnetic meridian at Ibadan is 7o
Bthe earth's magnetic intensity at Ibadan makes angle 7o with the horizontal direction
Ca magnetic needle will be inclined at 7o to the vertical at Ibadan
Dthe north pole of a magnetic needle dips downward at Ibadan
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Question 1044
jamb 1986
The sign of the change on a charged glass rod may be determined with
Aa charged electroscope
Ban uncharged electroscope
Ca galvanometer
Dan electrometer
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Question 1045
jamb 1986
The angle between the magnetic meridian and the geographic meridian at a locality on the earth is the
Alongitude of the locality
Bangle of inclination at the locality
Clatitude of the locality
Dangle of declination of the locality
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Question 1046
jamb 1986

Which of the following is true of magnetism?

AIron fillings cling mainly round the ends of a bar magnet
BThe freely suspended bar magnet comes to rest in the geographic north-south direction
CLike poles attract
DIodestone is a non-magnetic oxide
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Question 1047
jamb 1986
Which of the following is stored by a dry Leclanche cell?
AElectrical power
BKinetic energy
CElectric current
DChemical energy
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Question 1048
jamb 1986
Which of the following is NOT a part of a d.c. electric motor?
AField-magnet
BArmature
CCommutator
DTransformer
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Question 1049
jamb 1986
The vibration of an air column produces the sound in the
Apiano
Bguiter
Cflute
Dschool handbell
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Question 1050
jamb 1986
A man clapping his hands at regular intervals observes that the echo of a clap coincides with the next clap. If the reflecting cliff is 160m away and the speed of sound is 320ms-1, what is the frequency of the clapping?
A1 Hz
B2Hz
C4Hz
D8Hz
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