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Physics 1980 JAMB Past Questions

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26

If the volume of a fixed mass of a gas is kept constant, the pressure of the gas

  • A. is inversely proprotional to its centigrade temperature
  • B. is inversely proportional to its absolute temperature
  • C. is directly proportional to its centigrade temperature
  • D. is directly proportional to its absolute temperature
  • E. remains constant also
View Answer & Discuss (14) JAMB 1980
27

Which of the following statements about sound is NOT true?

  • A. sound is a longitudinal wave
  • B. sound can be reflected and refracted like light
  • C. sound travels through a vacuum
  • D. sound moves faster in a steel wire than in air
  • E. sound can ony be produced by vibrating objects
View Answer & Discuss (9) JAMB 1980
28

In a compound microscope

  • A. there is only one lens
  • B. the objective lens have a shorter focal length than the eyepiece which is convex
  • C. the objective lens has a longer focal length than the eyepiece which is convex
  • D. the objective lens has a shorter focal length than the eyepiece which is concave
  • E. the objective and the eyepiece are both convex and have the same focal length
View Answer & Discuss (19) JAMB 1980
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29
In sunlight, a blue flower looks blue because we see the flower by the light it
  • A. recieves from our eye
  • B. disperses
  • C. absorbs
  • D. refracts
  • E. reflects
View Answer & Discuss (1) JAMB 1980
30
High Tension(H.T.) transmission means
  • A. to transmit a given amount of power, the tension in the conducting wire must be high
  • B. heat is not lost when current is passed through a conductor
  • C. heat is gained when a given power is transmitted
  • D. a big transformer is required to transmit power
  • E. trasmission of power at low current and high voltage
View Answer & Discuss (4) JAMB 1980
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