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Physics Past Questions

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2931

Which one of the following is a vector quantity?

  • A. Temperature gradient
  • B. Mass
  • C. Work
  • D. Time
View Answer & Discuss (11) JAMB 2015
2932
Efficiency of a transformer is equal to
  • A. Efficiency of transformer = (secondary coil ÷ primary coil) × 100%
  • B. Efficiency of transformer = (mechanical advantage ÷ velocity ratio) × 100%
  • C. Efficiency of a transformer = (Number of turns in the secondary coil ÷ Number of turns in the primary coil) × 100%
  • D. Efficiency of a transformer = (power developed in the secondary coil ÷ power supplied to the primary coil) × 100%
View Answer & Discuss (5) JAMB 2015
2933
Volatile liquids usually
  • A. Have high boiling points
  • B. have low boiling points
  • C. have high densities
  • D. have high melting points
View Answer & Discuss (1) JAMB 2015
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2934

When a man moves toward a plane mirror at a speed of 6m/s, the distance the man and his image increased at a speed of?

  • A. 2 m/s
  • B. 4 m/s
  • C. 12 m/s
  • D. 14 m/s
View Answer & Discuss (14) JAMB 2015
2935
Which of the following instrument is most accurately for comparing electromotive force (e.m.f) of two cells?
  • A. Voltmeter
  • B. Meter rule
  • C. Galvanometer
  • D. Potentiometer
View Answer & Discuss JAMB 2015
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