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2005 - JAMB Physics Past Questions and Answers - page 3

21

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 = 10ms2]

A
100N
B
620N
C
50N
D
310N
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22

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

A
capillarity
B
surface tension
C
osmosis
D
diffusion
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23

I. reproducibility

II. Sensibility

III. High terminal capacity

iv. High accuracy

 The quantities of a good thermometer include?
A
I, II and IV only
B
I, III and IV only
C
I, II and III only
D
II, III and IV only
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24

The process whereby a liquid turns spontaneously into vapour is called?

A
regelation
B
sublimation
C
boiling
D
evaporation
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25

I. Melting

II. Boiling

III. Refraction

IV. Conduction

Which combination of the above is evident of the molecular nature of matter?

A
II , III and IV only
B
I ,II and IV only
C
I , III and IV only
D
I , II and III only
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26

When very hot water is poured into two identical thin and thick glass tumblers in equal volumes, the thick one cracks because?

A
of the even expansion of glass
B
glass is a crystal
C
glass is a good conductor of heat
D
of the uneven expansion of gass
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27

Satellite communication network makes use of?

A
visible light
B
sound wave
C
radio wave
D
infra-red wave
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28

An electric device is rated 2000 W, 250 v. The correct fuse rating of the device is?

A
9 A
B
8 A
C
6 A
D
7 A
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29

The north pole of a magnet can never be separated from the south pole because of the property knowledge as?

A
magnetic octopole
B
magnetic monopole
C
magnetic dipole
D
magnetic quadrupole
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30

A car battery rated 45 A H is charged with a charger whose rating is 2.5A.How long will it take to charge the battery full?

A
10 hrs
B
18 hrs
C
20 hrs
D
25 hrs
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