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1896

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
1897

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
1898
a balloon inflated with helium gas at ground level is released. As it rises through a constant temperature atmosphere.
  • A. its pressuren reduces but volume remains constant
  • B. te product of pressure and volume remains constant
  • C. both pressure and volume increases
  • D. its pressure remains constant but the volume decreases
  • E. both pressure and volume remains constant
View Answer & Discuss (6) JAMB 1981
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1899

Change of state is accompanied by change of?

  • A. temperature
  • B. volume
  • C. heat content
  • D. temperature and volume
  • E. volume and heat content
View Answer & Discuss (9) JAMB 1981
1900
The quantity (timbre) of sound depends on
  • A. amplitude
  • B. frequency
  • C. harmonics
  • D. velocity
  • E. wavelength
View Answer & Discuss (10) JAMB 1981
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