Physics Past Questions

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

48 questions
Question 1 of 8 48 total questions
Question 21
jamb 1979
In what range of temperature is the expansion of water anomalous?
A+208oC to +212oC
B-80oC + -76oC
C-4oC to 0oC
D+96oC to +100oC
E0oC to +4oC
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Question 22
jamb 1979
If in a simple pendulum experiment the length of the inextensible string is increased by a factor of four, its period is increased by a factor of
A4
B\(\frac{\pi}{2}\)
C\(\frac{1}{4}\)
D2\(\pi\)
E2
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Question 23
jamb 1979

Which of the following types of waves cannot travel through a vacuum?

Asound waves
Blight waves
Cinfra-red waves
Dx-radiation
Eradio waves
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Question 24
jamb 1979
The temperature at which the water vapour present in the air saturates the air and begins to condense is known as
Aboiling point
Bmelting point
Ctriple point
Ddew point
Ecritical temperature
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Question 25
jamb 1979

Two closed vessels contain equal volumes of boiling water and are identical except that one is blackened on the outside while the other is polished. Which of the following is correct?

Athe polished vessel will cool faster because a polished surface is a good radiator
Bthe polished vessel will cool faster because it will absorbe less heat from the room
Cthe black vessel will cool faster because it is a better conductor of heat
Dthe polished vesselwill cool faster because it reflects heat better
Ethe black vessel will cool faster because a black surface radiates heat faster than a polished one
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Question 26
jamb 1979
A 500kg car which was initially at rest travelled with an acceleration of 5m sec-2, its kinetic energy after 4 seconds was
A105J
B2.5 x 103J
C2 x 103J
D5 x 103J
E5 x 105J`
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Question 27
jamb 1979
Which of the following statements defines correctly the efficiency of a machine?
Athe load carried by the machine divided by effort required in carrying the load
Bthe distance moved by the load divided by the distance moved by the effort
Cthe useful work done by the machine divided by the total work put into the machine
Dthe movement of the load divided by the movement of the effort about the same point
Ethe temperature at the end of the application of the machine divided by the initial temperature
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Question 28
jamb 1979
The density 400cm3 of palm oil was 0.9gcm-3 before frying. If the density of the oil was 0.6gm-3 after frying,assuming no loss of oil due to spilling, its new volume was
A360cm3
B600cm3
C240cm3
D800cm3
E450cm3
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