2006 - JAMB Physics Past Questions and Answers - page 1
1
A uniform solid cube material 10cm on each side of mass 700g is submerged in water. which of the following best described the behavior of the cube water?
A
the cube will melt after a period of time
B
the cube will float
C
the cube will sink in water
D
the cube will rest at an equilibrium position in water
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2
At low humidity in an environment, the human skin is usually?
A
damp and rough
B
damp and smooth
C
dry and rough
D
dry and smooth
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3
If the relative density of gold is 19.2, the volume of 2.4kg of gold is?
A
8.00 x 10-3 m3
B
1.25 x 10-4 m3
C
1.92 x 10-4 m3
D
4.61 x 10-3 m3
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4
The thermometric property of a constant volume thermometer is?
A
change in volume
B
differential expanssion
C
change in pressure
D
change in length
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5
An immersion heater rated 2.0A, 240V is used to boil water from temperature 52°c to 100°c. If the mass of the water is 2.5kg. determine the time taken to boil the water.
[specific heat capacity of water = 4.2 x 103 jkg-1 k-1]
[specific heat capacity of water = 4.2 x 103 jkg-1 k-1]
A
1.05 x 103s
B
1.05 x 105s
C
1.05 x 102s
D
1.05 x 104s
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6
The thermos flask is designed to?
A
prevent heat loss or gain by conduction, convection amd radiation
B
store hot tea or water
C
prevent heat gain by conduction, convection and radiation
D
prevent head lost conduction, convention and radiation
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7
what is likely to happen if the glass of a thermometer expands more upon heating than the liquid inside?
A
the glass will break
B
the glass will shrink
C
the liquid will rise up in the stem
D
the liquid will go down in the stem
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8
A drop of petrol makes a finger colder than a drop of water would because?
A
petrol takes its latent heat of veporization from the finger
B
petrol takes its latent heat of fusion from the finger
C
water is more viscious than petrol
D
water has higher surface tension dan petrol
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9
A cell of internal resistance r is connected to an external resistor R. The conductor for maximum power transfer is?
A
R < r
B
R = r
C
R = 2r
D
R > r
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10
The production and type of charge of a body can only be accounted for by the?
A
deficiency or surplus of electrons
B
equibrium in protons and neutrons
C
deficiency or surplus of protrons
D
deficiency or surplus of neutrons
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