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Physics 2009 NECO Past Questions

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1

An observer heard the sound of thunder 5.8s after the lightning flash was seen. How far was he from the source? [Speed of sound in air = 330ms-1]

  • A. 957m
  • B. 1914m
  • C. 3828m
  • D. 8700m
  • E. 17400m
View Answer & Discuss (11) NECO 2009
2
The space between the two walls of a vacuum flask is completely evacuated to reduce heat loss by
  • A. condensation
  • B. conduction
  • C. convection
  • D. evaporation
  • E. radiation
View Answer & Discuss (3) NECO 2009
3

Which of the following substances undergoes sublimation?

  • A. Ether
  • B. Ice
  • C. Iodine
  • D. Naphthalene
  • E. Turpentine
View Answer & Discuss (11) NECO 2009
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4

Determine the value of x from the nuclear reaction below,

\(^{222}_{86}Rn\) → \(^{x}_{88}Ra\) + 2β + energy

  • A. 220
  • B. 222
  • C. 224
  • D. 226
  • E. 228
View Answer & Discuss (2) NECO 2009
5
Which of the following statements about the pressure in a liquid is NOT correct? It
  • A. acts in all direction
  • B. changes with the material of the container
  • C. is the same at all points in the same horizontal plane
  • D. varies with the density of the liquid
  • E. varies with the depth of the liquid
View Answer & Discuss (1) NECO 2009
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