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Physics 1988 JAMB Past Questions

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16
Which of the following properties is/are common to all waves? i. Diffraction ii. Refraction iii. Interference
  • A. i only
  • B. ii only
  • C. ii and iii
  • D. i, ii, and iii
View Answer & Discuss (1) JAMB 1988
17
A piano wire 0.5m long has a total mass of 0.01kg and is stretched with a tension of 800N. Calculate the frequency of the wire when it sounds its fundamental note
  • A. 200Hz
  • B. 100Hz
  • C. 4Hz
  • D. 2Hz
View Answer & Discuss (3) JAMB 1988
18
A note is called an octave of another note when
  • A. its frequency is twice that of the first note
  • B. its frequency is half of the first note
  • C. the notes have the same fundamental frequency
  • D. its periodic time is twice that of the first note
View Answer & Discuss (2) JAMB 1988
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19

Which of the following factors affects the speed of sound in air? i. Temperature ii. pressure iii. Frequency

  • A. i only
  • B. ii only
  • C. i and ii only
  • D. ii and iii only
View Answer & Discuss (23) JAMB 1988
20

The speed of sound in air at sea level is 340ms\(^{-1}\) while that of light is 300 000kms\(^{-1}\). How far (to the nearest meter) from the center of a thunderstorm is an observer who hears a thunder 2s after a lightning flash?

  • A. 170m
  • B. 340m
  • C. 600m
  • D. 680m
View Answer & Discuss (29) JAMB 1988
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