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Physics 1981 JAMB Past Questions

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6

When fixed mass of an ideal gas expands at constant temperature, which property of the gas molecule increases?

  • A. average number per unit volume
  • B. average kinetic energy
  • C. average speed
  • D. average seperation
  • E. average number of collisions per unit time
View Answer & Discuss (19) JAMB 1981
7
Which of the following does NOT describe the image formed by a plane mirror?
  • A. erect
  • B. laterally inverted
  • C. same distance from mirror as object
  • D. magnified
  • E. virtual
View Answer & Discuss (4) JAMB 1981
8
If a source of sound is moving, a stationary listener will hear a sound of different frequency. This is called
  • A. Doppler effect
  • B. Resonance
  • C. Ultra sound
  • D. Diffraction of sound
  • E. Rarefaction
View Answer & Discuss (2) JAMB 1981
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9
Which of the following elements are real magnetic materials?
  • A. Iron, steel and nickel
  • B. copper, steel and iron
  • C. lead, iron and brass
  • D. glass, lead and steel
  • E. stone, air and iron
View Answer & Discuss (4) JAMB 1981
10
An inclined plane of angle \(\theta\), acting as a simple machine, has a velocity ratio
  • A. sin\(\theta\)
  • B. \(\frac{1}{\text{sin}\theta}\)
  • C. cos\(\theta\)
  • D. \(\frac{1}{\text{cos}\theta}\)
  • E. sin\(\theta cos\theta\)
View Answer & Discuss JAMB 1981
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