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Physics 1992 JAMB Past Questions

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16
The space between the double glass walls of a thermos flask is evacuated space are silvered. The residual source of heat loss takes place by
  • A. convection
  • B. radiation from the surface
  • C. conduction through the stopper and the glass
  • D. conduction across the walls
View Answer & Discuss (8) JAMB 1992
17
The equation of a wave is y = 0.005 sin[x(0.5X - 200t)] where x and y are in meters and t is in seconds. What is the velocity of the wave?
  • A. 4000ms-1
  • B. 400ms-1
  • C. 250ms-1
  • D. 40ms-1
View Answer & Discuss (9) JAMB 1992
18
Which of the following characteristics of a wave is used in the measurement of the depth of the sea?
  • A. diffraction
  • B. interference
  • C. refraction
  • D. reflection
View Answer & Discuss (13) JAMB 1992
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19

A note is the octave of another note if it has

  • A. a frequency twice that of the first note
  • B. frequency half that of the first note
  • C. the same fundamental frequency as the first one
  • D. a frequency frequency eight times that of the first note
View Answer & Discuss (4) JAMB 1992
20
What is the frequency of the sound made by a siren having a disc with 32 holes and making 25 revolution per seconds?
  • A. 80Hz
  • B. 600Hz
  • C. 800Hz
  • D. 1600Hz
View Answer & Discuss JAMB 1992
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