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Physics 1981 JAMB Past Questions

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26
The resistance of an open series circuit is
  • A. zero
  • B. half the normal resistance of the circuit
  • C. double the normal resistance of the circuit
  • D. one
  • E. infinite
View Answer & Discuss (7) JAMB 1981
27
The lack of power of accommodation which is mainly due to the hardening of the eye lens and is usual with onset of old age is called?
  • A. myopia
  • B. hypermyopia
  • C. presbyopia
  • D. astigmatism
  • E. eye ring
View Answer & Discuss (3) JAMB 1981
28

A body falls freely under gravity (g = 9.8ms-2) from a height of 40m on to the top of a platform 0.8m above the ground. Its velocity on reaching the platform is

  • A. 784ms-1
  • B. 80ms-1
  • C. 78.4ms-1
  • D. 39.2ms-1
  • E. 27.7ms-1
View Answer & Discuss (12) JAMB 1981
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29

Alternating current can induce voltage because it has a

  • A. ripple value
  • B. varying magnetic field
  • C. weaker magnetic field than direct current
  • D. stonger magnetic field than direct current
  • E. high peak value
View Answer & Discuss (3) JAMB 1981
30

Two particles X and Y starting from rest cover the same distance. The acceleration of X is twice that of Y. the ratio of the time taken by X to that taken by Y is

  • A. \(\frac{1}{2}\)
  • B. \(\frac{2}{\sqrt2}\)
  • C. \(\frac{1}{\sqrt2}\)
  • D. \(\sqrt 2\)
  • E. 4
View Answer & Discuss (26) JAMB 1981
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