Physics Past Questions

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

45 questions
Question 1 of 20 45 total questions
Question 11
jamb 1983

1,000 identical drops of oil of density 500kgm-3 have a total mass of 5 x 10-4kg. One of the drops forms a thin film of area 0.5m2 on water. The thickness of the film is

A2 x 10-8m
B2 x 10-9m
C2 x 10-7m
D3 x 10-9m
E2.8 x 10-8m
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Question 12
jamb 1983
a force of 16N applied 4.0kg block that is at rest on a smooth, horizontal surface. What is the velocity of the block at t = 5 seconds?
A4ms-1
B10ms-1
C20ms-1
D50ms-1
E80ms-1
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Question 13
jamb 1983

Of the following derived units, the one that is not a unit of power is

Ajoule/second
Bampere volt
Campere2volt
Dvolts2/ohm
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Question 14
jamb 1983
A piece of wood is floating on water. The forces acting on the wood are
Aupthrust and reaction
Bweight and reaction
Cweight and upthrust
Dupthrust and viscousity
Eweight and viscousity
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Question 15
jamb 1983

Ripples on water are similar to light waves in that they both

Ahave the same wavelength
Bare longitudinal
Ccannot be reflected
Dtravel at the same speed
Ecan be refracted and diffracted
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Question 16
jamb 1983
The electrochemical equivalent of a metal is 0.126 x 10-6 kgC-1. The mass of the metal that a current of 5A will deposit from a suitable bath in 1 hour is
A0.0378 x 10 -3kg
B0.227 x 10 -3kg
C0.378 x 10 -3kg
D0.595 x 10 -3kg
E2.268 x 10 -3kg
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Question 17
jamb 1983

A 24V potential difference is applied across a parallel combination of four 6-ohms resistor, The current in each resistor is

A1A
B4A
C16A
D18A
E36A
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Question 18
jamb 1983
The linear expansivity of brass is 2 x 10-5 oC-1. If the volume of a piece of brass is 10cm3 at 0oC, what will be its volume at 100oC?
A10.02cm3
B10.04cm3
C10.06cm3
D10.20cm3
E102.00cm3
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Question 19
jamb 1983
A milliameter with full scale deflection of 10mA has an internal resistance of 5 ohms. It would be converted to an ammeter with a full scale deflection of 1A by connecting a resistance of
A\(\frac{5}{99}\)ohms in series with it
B\(\frac{5}{99}\)ohms in parallel with it
C\(\frac{99}{5}\)ohms in series with it
D\(\frac{99}{5}\)ohms in parallel with it
E2 ohms in series with it
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Question 20
jamb 1983

Which of the following arrangements in the sequence shown can be used to obtain a pure spectrum of white light?

Asource, slit, converging lens, prism, converging lens, screen.
Bsource, slit, diverging lens, prism, diverging lens, screen.
Csource, converging lens, prism, diverging lens, screen.
Dsource, slit, prism, diverging lens, converging lens, screen.
Esource, slit, prism, diverging lens, sreen.
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Question 21
jamb 1983

A man of mass 50kg ascends a flight of stairs 5m high in 5 seconds. If acceleration due to gravity is 10ms-2, the power expended is?

A100W
B200W
C250W
D400W
E500W
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Question 22
jamb 1983
Which of the following conditions are necessary and sufficient for total internal reflection to take place at the boundary between two optical media? i. light is passing from optically denser medium to optically less dense medium. ii. light is passing from optically less dense medium to optically denser medium. iii. angle of incidence is greater. iv. angle of incidence is lesser
Ai and ii only
Bii and iii only
Cii and iv only
Di and iii only
Eii and iv only
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Question 23
jamb 1983
A train has an initial velocity of 44ms-1 and an acceleration of -4ms-1. Its velocity after 10 seconds is
A2ms-1
B4ms-1
C8ms-1
D12ms-1
E16ms-1
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Question 24
jamb 1983

If the pressure on 100cm3 of an ideal gas is doubled while its kelvin temperature is halved, then the new volume of the gas will become

A25cm3
B50cm3
C100cm3
D200cm3
E400cm3
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Question 25
jamb 1983
The range of wavelengths of the visible spectrum is 400nm - 700nm. The wavelength of gamma rays is
Alonger than 700nm
Bshorter than 700nm but longer then 400nm
C550nm
Dshorter than 400nm
Einfinite
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Question 26
jamb 1983
Which of the following statements about defects of vision is/are CORRECT? i. for a long sighted person, close objects appear blurred. ii. for a short sighted person, distant objects appear blurred. iii. short sight is corrected by using a pair of converging lenses.
Ai only
Bii only
Ci and ii only
Dii and iii only
Ei, ii and iii
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Question 27
jamb 1983

which of the following is NOT correct? i. the pitch of a sound note depends on the frequency of vibrations. ii. the intensity of a sound note is proportional to the amplitude of vibrations. iii. beats are produced by two sources of sound because one wave is travelling faster than the other. iv. when two sources of sound of frequencies 500Hz and 502Hz are sounded together, a beat frequency of 2Hz is observed. v. the first harmonic of a tone have double the frequency of the fundamental note.

Ai and ii
Bii and iii
Ci and iii
Diii and iv
Eiv and v
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Question 28
jamb 1983
A ship travelling towards a cliff receives the echo of its whistle after 3.5 seconds. A short while later, it receives the echo after 2.5 seconds. If the speed of sound in air under the prevalling condition is 250ms -1, how much closer is the ship to the cliff?
A10m
B125m
C175m
D350m
E1,000m
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Question 29
jamb 1983

Which of the following statements is true about liquid pressure is NOT correct? The pressure

Aat a point in a liquid is proportional to the depth
Bat any point in a liquid is the same at the same level
Cis exerted equally in all directions at any point
Dof a liquid at any point on the wall of its container acts in a direction perpendicular to the wall
Eat a particular depth depends on the shape of the vessel
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Question 30
jamb 1983

If relative density of a metal is 19, what will be the mass of 20cm3 of the metal when immersed in water?

A380g
B400g
C360g
D39g
E180g
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