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Physics 1994 WAEC Past Questions

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31
A note of frequency of 2000Hz has a velocity of \(400ms^{-1}\). What is the wavelength of the note?
  • A. 800m
  • B. 200m
  • C. 5m
  • D. 2m
  • E. 0.2m
View Answer & Discuss WAEC 1994
32
A cell of e.m.f. 1.5V and internal resistance of 2.5Ω is connected in series with an ammeter of resistance 0.5W and a resistor of resistance of 7.0Ω. Calculate the current in the circuit.
  • A. 0.15A
  • B. 0.20A
  • C. 2.10A
  • D. 3A
  • E. 6.6A
View Answer & Discuss (3) WAEC 1994
33
A ball is dropped from a height of 45m above the ground. Calculate the velocity of the ball just before it strikes the ground. (Neglect air resistance and take g as \(10ms^{-2}\)
  • A. 21.2\(ms^{-1}\)
  • B. 30\(ms^{-1}\)
  • C. 300\(ms^{-1}\)
  • D. 450\(ms^{-1}\)
  • E. 900\(ms^{-1}\)
View Answer & Discuss (1) WAEC 1994
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34
A body accelerates uniformly from rest at \(2ms^{-2}\). Calculate the velocity after traveling 9m
  • A. 36\(ms^{-1}\)
  • B. 18\(ms^{-1}\)
  • C. 6\(ms^{-1}\)
  • D. 4.5\(ms^{-1}\)
  • E. 4.24\(ms^{-1}\)
View Answer & Discuss (1) WAEC 1994
35
A metal rod of length 40cm at 20°C is heated to a temperature of 45°C. If the new length of the rod is 40.05cm. Calculate its linear expansitivity
  • A. 1.2 x \(10^{-5}K{-1}\)
  • B. 2.5x \(10^{-5}K{-1}\)
  • C. 3.5x \(10^{-5}K{-1}\)
  • D. 4.5x \(10^{-5}K{-1}\)
  • E. 5x \(10^{-5}K{-1}\)
View Answer & Discuss (2) WAEC 1994
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