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Physics 2003 WAEC Past Questions

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11

A metal rod of length 100cm is heated through 100ºC, calculate the change in length of the rod [linear expansivity of the material of the rod is 3 x 10\(^{-5}\)K\(^{-1}\)]

  • A. 4mm
  • B. 3mm
  • C. 2mm
  • D. 1mm
View Answer & Discuss (2) WAEC 2003
12
The heat capacity of a calorimeter is the amount of energy required to
  • A. change the temperature of 1kg of the calorimeter by 1k
  • B. change 1kg mass of the calorimeter to liquid at the same temperature
  • C. change the temperature of the calorimeter
  • D. melt the calorimeter into liquid at a constant temperature
View Answer & Discuss (5) WAEC 2003
13
Which of the following statement about latent heat of vaporization is correct? It
  • A. weakens the adhesive force between molecules of a liquid and those of its container
  • B. breaks completely the force of attraction completely between the molecules of a liquid
  • C. add to the heat content of a liquid
  • D. increases the cohesive forces between liquid molecules
View Answer & Discuss WAEC 2003
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14
When the pressure of a fixed mass of gas is doubled at constant temperature, the volume of the gas is
  • A. increased four times
  • B. doubled
  • C. unchangeable
  • D. halved
View Answer & Discuss WAEC 2003
15
The volume of a given mass of an ideal gas at 327k and 9.52 x 104 Pa is 40cm3. calculate the volume of the gas at 273k and 1.034 x 105Pa.
  • A. 68.23cm3
  • B. 47.91cm3
  • C. 44.60cm3
  • D. 30.75cm3
View Answer & Discuss WAEC 2003
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