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Physics 2003 NECO Past Questions

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1
Young’s modulus of elasticity is the ratio of stress to strain, provided the load does not exceed the
  • A. breaking point
  • B. elastic limit
  • C. plastic limit
  • D. stress limit
  • E. yield point
View Answer & Discuss NECO 2003
2
Which of the following instruments can be used to measure e.m.f. most accurately.
  • A. Ammeter
  • B. Galvanometer
  • C. Metre bridge
  • D. Potentiometer
  • E. Voltmeter
View Answer & Discuss NECO 2003
3
Evaporation of a liquid produces cooling of the liquid because the
  • A. attraction between the vapour molecules and the liquid molecules is great
  • B. average kinetic energy of the liquid is reduced
  • C. density of the liquid decreases
  • D. vapour pressure above the liquid rises
  • E. volume of the liquid decreases
View Answer & Discuss (2) NECO 2003
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4
Calculate the amount of heat generated in an external load of resistance 8Ω if an alternating current of peak value 5 A is passed through it for 100s.
  • A. 2.0 × 104J
  • B. 1.0 × 104J
  • C. 5.0 × 103J
  • D. 4.0 × 103J
  • E. 2.0 × 102J
View Answer & Discuss (4) NECO 2003
5
A machine has an efficiency of 80%. If the machine is required to overcome a load of 60N with a force of 40N, calculate its velocity ratio.
  • A. 0.53
  • B. 0.83
  • C. 1.20
  • D. 1.50
  • E. 1.88
View Answer & Discuss (1) NECO 2003
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