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Physics 2012 JAMB Past Questions

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21

The equation of a wave traveling in a horizontal direction is expressed as y = 15 sin \(\frac{2\pi}{5}\) (60t - x). What is its wavelength?

  • A. 60m
  • B. 15m
  • C. 5m
  • D. 2m
View Answer & Discuss (15) JAMB 2012
22

Which of the following factors will affect the velocity of sound?

  • A. An increase in the pitch of the sound
  • B. An increase in the loudness of the sound
  • C. Wind travelling in the same direction of the sound
  • D. A change in the atmospheric pressure at constant temperature
View Answer & Discuss (12) JAMB 2012
23

The characteristic of a vibration that determines its intensity is the

  • A. Frequency
  • B. Overtone
  • C. Wavelength
  • D. Amplitude
View Answer & Discuss (3) JAMB 2012
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24
Where can a man place his face to get an enlarged image when using a concave mirror to shave?
  • A. Between the centre of curvature and the principal focus
  • B. At the principal focus
  • C. Between the principal focus and the pole
  • D. At the centre of curvature
View Answer & Discuss (4) JAMB 2012
25
A pinhole camera is placed 300m in front of a building so that the image is formed on a screen 5cm from the the pinhole. If the image is 2.5cm high, the height of the building will be
  • A. 25m
  • B. 50m
  • C. 100m
  • D. 150m
View Answer & Discuss (5) JAMB 2012
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